1 //===-- LLParser.cpp - Parser Class ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the parser class for .ll files.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/AutoUpgrade.h"
16 #include "llvm/CallingConv.h"
17 #include "llvm/Constants.h"
18 #include "llvm/DerivedTypes.h"
19 #include "llvm/InlineAsm.h"
20 #include "llvm/Instructions.h"
21 #include "llvm/LLVMContext.h"
22 #include "llvm/Metadata.h"
23 #include "llvm/Module.h"
24 #include "llvm/Operator.h"
25 #include "llvm/ValueSymbolTable.h"
26 #include "llvm/ADT/SmallPtrSet.h"
27 #include "llvm/ADT/StringExtras.h"
28 #include "llvm/Support/ErrorHandling.h"
29 #include "llvm/Support/raw_ostream.h"
33 /// ValID - Represents a reference of a definition of some sort with no type.
34 /// There are several cases where we have to parse the value but where the
35 /// type can depend on later context. This may either be a numeric reference
36 /// or a symbolic (%var) reference. This is just a discriminated union.
39 t_LocalID, t_GlobalID, // ID in UIntVal.
40 t_LocalName, t_GlobalName, // Name in StrVal.
41 t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
42 t_Null, t_Undef, t_Zero, // No value.
43 t_EmptyArray, // No value: []
44 t_Constant, // Value in ConstantVal.
45 t_InlineAsm, // Value in StrVal/StrVal2/UIntVal.
46 t_Metadata // Value in MetadataVal.
51 std::string StrVal, StrVal2;
54 Constant *ConstantVal;
55 MetadataBase *MetadataVal;
56 ValID() : APFloatVal(0.0) {}
60 /// Run: module ::= toplevelentity*
61 bool LLParser::Run() {
65 return ParseTopLevelEntities() ||
66 ValidateEndOfModule();
69 /// ValidateEndOfModule - Do final validity and sanity checks at the end of the
71 bool LLParser::ValidateEndOfModule() {
72 if (!ForwardRefTypes.empty())
73 return Error(ForwardRefTypes.begin()->second.second,
74 "use of undefined type named '" +
75 ForwardRefTypes.begin()->first + "'");
76 if (!ForwardRefTypeIDs.empty())
77 return Error(ForwardRefTypeIDs.begin()->second.second,
78 "use of undefined type '%" +
79 utostr(ForwardRefTypeIDs.begin()->first) + "'");
81 if (!ForwardRefVals.empty())
82 return Error(ForwardRefVals.begin()->second.second,
83 "use of undefined value '@" + ForwardRefVals.begin()->first +
86 if (!ForwardRefValIDs.empty())
87 return Error(ForwardRefValIDs.begin()->second.second,
88 "use of undefined value '@" +
89 utostr(ForwardRefValIDs.begin()->first) + "'");
91 if (!ForwardRefMDNodes.empty())
92 return Error(ForwardRefMDNodes.begin()->second.second,
93 "use of undefined metadata '!" +
94 utostr(ForwardRefMDNodes.begin()->first) + "'");
97 // Look for intrinsic functions and CallInst that need to be upgraded
98 for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
99 UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
101 // Check debug info intrinsics.
102 CheckDebugInfoIntrinsics(M);
106 //===----------------------------------------------------------------------===//
107 // Top-Level Entities
108 //===----------------------------------------------------------------------===//
110 bool LLParser::ParseTopLevelEntities() {
112 switch (Lex.getKind()) {
113 default: return TokError("expected top-level entity");
114 case lltok::Eof: return false;
115 //case lltok::kw_define:
116 case lltok::kw_declare: if (ParseDeclare()) return true; break;
117 case lltok::kw_define: if (ParseDefine()) return true; break;
118 case lltok::kw_module: if (ParseModuleAsm()) return true; break;
119 case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
120 case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
121 case lltok::kw_type: if (ParseUnnamedType()) return true; break;
122 case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
123 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
124 case lltok::LocalVar: if (ParseNamedType()) return true; break;
125 case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
126 case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
127 case lltok::Metadata: if (ParseStandaloneMetadata()) return true; break;
128 case lltok::NamedMD: if (ParseNamedMetadata()) return true; break;
130 // The Global variable production with no name can have many different
131 // optional leading prefixes, the production is:
132 // GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
133 // OptionalAddrSpace ('constant'|'global') ...
134 case lltok::kw_private : // OptionalLinkage
135 case lltok::kw_linker_private: // OptionalLinkage
136 case lltok::kw_internal: // OptionalLinkage
137 case lltok::kw_weak: // OptionalLinkage
138 case lltok::kw_weak_odr: // OptionalLinkage
139 case lltok::kw_linkonce: // OptionalLinkage
140 case lltok::kw_linkonce_odr: // OptionalLinkage
141 case lltok::kw_appending: // OptionalLinkage
142 case lltok::kw_dllexport: // OptionalLinkage
143 case lltok::kw_common: // OptionalLinkage
144 case lltok::kw_dllimport: // OptionalLinkage
145 case lltok::kw_extern_weak: // OptionalLinkage
146 case lltok::kw_external: { // OptionalLinkage
147 unsigned Linkage, Visibility;
148 if (ParseOptionalLinkage(Linkage) ||
149 ParseOptionalVisibility(Visibility) ||
150 ParseGlobal("", SMLoc(), Linkage, true, Visibility))
154 case lltok::kw_default: // OptionalVisibility
155 case lltok::kw_hidden: // OptionalVisibility
156 case lltok::kw_protected: { // OptionalVisibility
158 if (ParseOptionalVisibility(Visibility) ||
159 ParseGlobal("", SMLoc(), 0, false, Visibility))
164 case lltok::kw_thread_local: // OptionalThreadLocal
165 case lltok::kw_addrspace: // OptionalAddrSpace
166 case lltok::kw_constant: // GlobalType
167 case lltok::kw_global: // GlobalType
168 if (ParseGlobal("", SMLoc(), 0, false, 0)) return true;
176 /// ::= 'module' 'asm' STRINGCONSTANT
177 bool LLParser::ParseModuleAsm() {
178 assert(Lex.getKind() == lltok::kw_module);
182 if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
183 ParseStringConstant(AsmStr)) return true;
185 const std::string &AsmSoFar = M->getModuleInlineAsm();
186 if (AsmSoFar.empty())
187 M->setModuleInlineAsm(AsmStr);
189 M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
194 /// ::= 'target' 'triple' '=' STRINGCONSTANT
195 /// ::= 'target' 'datalayout' '=' STRINGCONSTANT
196 bool LLParser::ParseTargetDefinition() {
197 assert(Lex.getKind() == lltok::kw_target);
200 default: return TokError("unknown target property");
201 case lltok::kw_triple:
203 if (ParseToken(lltok::equal, "expected '=' after target triple") ||
204 ParseStringConstant(Str))
206 M->setTargetTriple(Str);
208 case lltok::kw_datalayout:
210 if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
211 ParseStringConstant(Str))
213 M->setDataLayout(Str);
219 /// ::= 'deplibs' '=' '[' ']'
220 /// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
221 bool LLParser::ParseDepLibs() {
222 assert(Lex.getKind() == lltok::kw_deplibs);
224 if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
225 ParseToken(lltok::lsquare, "expected '=' after deplibs"))
228 if (EatIfPresent(lltok::rsquare))
232 if (ParseStringConstant(Str)) return true;
235 while (EatIfPresent(lltok::comma)) {
236 if (ParseStringConstant(Str)) return true;
240 return ParseToken(lltok::rsquare, "expected ']' at end of list");
243 /// ParseUnnamedType:
245 /// ::= LocalVarID '=' 'type' type
246 bool LLParser::ParseUnnamedType() {
247 unsigned TypeID = NumberedTypes.size();
249 // Handle the LocalVarID form.
250 if (Lex.getKind() == lltok::LocalVarID) {
251 if (Lex.getUIntVal() != TypeID)
252 return Error(Lex.getLoc(), "type expected to be numbered '%" +
253 utostr(TypeID) + "'");
254 Lex.Lex(); // eat LocalVarID;
256 if (ParseToken(lltok::equal, "expected '=' after name"))
260 assert(Lex.getKind() == lltok::kw_type);
261 LocTy TypeLoc = Lex.getLoc();
262 Lex.Lex(); // eat kw_type
264 PATypeHolder Ty(Type::getVoidTy(Context));
265 if (ParseType(Ty)) return true;
267 // See if this type was previously referenced.
268 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
269 FI = ForwardRefTypeIDs.find(TypeID);
270 if (FI != ForwardRefTypeIDs.end()) {
271 if (FI->second.first.get() == Ty)
272 return Error(TypeLoc, "self referential type is invalid");
274 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
275 Ty = FI->second.first.get();
276 ForwardRefTypeIDs.erase(FI);
279 NumberedTypes.push_back(Ty);
285 /// ::= LocalVar '=' 'type' type
286 bool LLParser::ParseNamedType() {
287 std::string Name = Lex.getStrVal();
288 LocTy NameLoc = Lex.getLoc();
289 Lex.Lex(); // eat LocalVar.
291 PATypeHolder Ty(Type::getVoidTy(Context));
293 if (ParseToken(lltok::equal, "expected '=' after name") ||
294 ParseToken(lltok::kw_type, "expected 'type' after name") ||
298 // Set the type name, checking for conflicts as we do so.
299 bool AlreadyExists = M->addTypeName(Name, Ty);
300 if (!AlreadyExists) return false;
302 // See if this type is a forward reference. We need to eagerly resolve
303 // types to allow recursive type redefinitions below.
304 std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
305 FI = ForwardRefTypes.find(Name);
306 if (FI != ForwardRefTypes.end()) {
307 if (FI->second.first.get() == Ty)
308 return Error(NameLoc, "self referential type is invalid");
310 cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
311 Ty = FI->second.first.get();
312 ForwardRefTypes.erase(FI);
315 // Inserting a name that is already defined, get the existing name.
316 const Type *Existing = M->getTypeByName(Name);
317 assert(Existing && "Conflict but no matching type?!");
319 // Otherwise, this is an attempt to redefine a type. That's okay if
320 // the redefinition is identical to the original.
321 // FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
322 if (Existing == Ty) return false;
324 // Any other kind of (non-equivalent) redefinition is an error.
325 return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
326 Ty->getDescription() + "'");
331 /// ::= 'declare' FunctionHeader
332 bool LLParser::ParseDeclare() {
333 assert(Lex.getKind() == lltok::kw_declare);
337 return ParseFunctionHeader(F, false);
341 /// ::= 'define' FunctionHeader '{' ...
342 bool LLParser::ParseDefine() {
343 assert(Lex.getKind() == lltok::kw_define);
347 return ParseFunctionHeader(F, true) ||
348 ParseFunctionBody(*F);
354 bool LLParser::ParseGlobalType(bool &IsConstant) {
355 if (Lex.getKind() == lltok::kw_constant)
357 else if (Lex.getKind() == lltok::kw_global)
361 return TokError("expected 'global' or 'constant'");
367 /// ParseUnnamedGlobal:
368 /// OptionalVisibility ALIAS ...
369 /// OptionalLinkage OptionalVisibility ... -> global variable
370 /// GlobalID '=' OptionalVisibility ALIAS ...
371 /// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
372 bool LLParser::ParseUnnamedGlobal() {
373 unsigned VarID = NumberedVals.size();
375 LocTy NameLoc = Lex.getLoc();
377 // Handle the GlobalID form.
378 if (Lex.getKind() == lltok::GlobalID) {
379 if (Lex.getUIntVal() != VarID)
380 return Error(Lex.getLoc(), "variable expected to be numbered '%" +
381 utostr(VarID) + "'");
382 Lex.Lex(); // eat GlobalID;
384 if (ParseToken(lltok::equal, "expected '=' after name"))
389 unsigned Linkage, Visibility;
390 if (ParseOptionalLinkage(Linkage, HasLinkage) ||
391 ParseOptionalVisibility(Visibility))
394 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
395 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
396 return ParseAlias(Name, NameLoc, Visibility);
399 /// ParseNamedGlobal:
400 /// GlobalVar '=' OptionalVisibility ALIAS ...
401 /// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
402 bool LLParser::ParseNamedGlobal() {
403 assert(Lex.getKind() == lltok::GlobalVar);
404 LocTy NameLoc = Lex.getLoc();
405 std::string Name = Lex.getStrVal();
409 unsigned Linkage, Visibility;
410 if (ParseToken(lltok::equal, "expected '=' in global variable") ||
411 ParseOptionalLinkage(Linkage, HasLinkage) ||
412 ParseOptionalVisibility(Visibility))
415 if (HasLinkage || Lex.getKind() != lltok::kw_alias)
416 return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
417 return ParseAlias(Name, NameLoc, Visibility);
421 // ::= '!' STRINGCONSTANT
422 bool LLParser::ParseMDString(MetadataBase *&MDS) {
424 if (ParseStringConstant(Str)) return true;
425 MDS = MDString::get(Context, Str);
430 // ::= '!' MDNodeNumber
431 bool LLParser::ParseMDNode(MetadataBase *&Node) {
432 // !{ ..., !42, ... }
434 if (ParseUInt32(MID)) return true;
436 // Check existing MDNode.
437 std::map<unsigned, MetadataBase *>::iterator I = MetadataCache.find(MID);
438 if (I != MetadataCache.end()) {
443 // Check known forward references.
444 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
445 FI = ForwardRefMDNodes.find(MID);
446 if (FI != ForwardRefMDNodes.end()) {
447 Node = FI->second.first;
451 // Create MDNode forward reference
452 SmallVector<Value *, 1> Elts;
453 std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID);
454 Elts.push_back(MDString::get(Context, FwdRefName));
455 MDNode *FwdNode = MDNode::get(Context, Elts.data(), Elts.size());
456 ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
461 ///ParseNamedMetadata:
462 /// !foo = !{ !1, !2 }
463 bool LLParser::ParseNamedMetadata() {
464 assert(Lex.getKind() == lltok::NamedMD);
466 std::string Name = Lex.getStrVal();
468 if (ParseToken(lltok::equal, "expected '=' here"))
471 if (Lex.getKind() != lltok::Metadata)
472 return TokError("Expected '!' here");
475 if (Lex.getKind() != lltok::lbrace)
476 return TokError("Expected '{' here");
478 SmallVector<MetadataBase *, 8> Elts;
480 if (Lex.getKind() != lltok::Metadata)
481 return TokError("Expected '!' here");
484 if (ParseMDNode(N)) return true;
486 } while (EatIfPresent(lltok::comma));
488 if (ParseToken(lltok::rbrace, "expected end of metadata node"))
491 NamedMDNode::Create(Context, Name, Elts.data(), Elts.size(), M);
495 /// ParseStandaloneMetadata:
497 bool LLParser::ParseStandaloneMetadata() {
498 assert(Lex.getKind() == lltok::Metadata);
500 unsigned MetadataID = 0;
501 if (ParseUInt32(MetadataID))
503 if (MetadataCache.find(MetadataID) != MetadataCache.end())
504 return TokError("Metadata id is already used");
505 if (ParseToken(lltok::equal, "expected '=' here"))
509 PATypeHolder Ty(Type::getVoidTy(Context));
510 if (ParseType(Ty, TyLoc))
513 if (Lex.getKind() != lltok::Metadata)
514 return TokError("Expected metadata here");
517 if (Lex.getKind() != lltok::lbrace)
518 return TokError("Expected '{' here");
520 SmallVector<Value *, 16> Elts;
521 if (ParseMDNodeVector(Elts)
522 || ParseToken(lltok::rbrace, "expected end of metadata node"))
525 MDNode *Init = MDNode::get(Context, Elts.data(), Elts.size());
526 MetadataCache[MetadataID] = Init;
527 std::map<unsigned, std::pair<MetadataBase *, LocTy> >::iterator
528 FI = ForwardRefMDNodes.find(MetadataID);
529 if (FI != ForwardRefMDNodes.end()) {
530 MDNode *FwdNode = cast<MDNode>(FI->second.first);
531 FwdNode->replaceAllUsesWith(Init);
532 ForwardRefMDNodes.erase(FI);
539 /// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
542 /// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
543 /// ::= 'getelementptr' 'inbounds'? '(' ... ')'
545 /// Everything through visibility has already been parsed.
547 bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
548 unsigned Visibility) {
549 assert(Lex.getKind() == lltok::kw_alias);
552 LocTy LinkageLoc = Lex.getLoc();
553 if (ParseOptionalLinkage(Linkage))
556 if (Linkage != GlobalValue::ExternalLinkage &&
557 Linkage != GlobalValue::WeakAnyLinkage &&
558 Linkage != GlobalValue::WeakODRLinkage &&
559 Linkage != GlobalValue::InternalLinkage &&
560 Linkage != GlobalValue::PrivateLinkage &&
561 Linkage != GlobalValue::LinkerPrivateLinkage)
562 return Error(LinkageLoc, "invalid linkage type for alias");
565 LocTy AliaseeLoc = Lex.getLoc();
566 if (Lex.getKind() != lltok::kw_bitcast &&
567 Lex.getKind() != lltok::kw_getelementptr) {
568 if (ParseGlobalTypeAndValue(Aliasee)) return true;
570 // The bitcast dest type is not present, it is implied by the dest type.
572 if (ParseValID(ID)) return true;
573 if (ID.Kind != ValID::t_Constant)
574 return Error(AliaseeLoc, "invalid aliasee");
575 Aliasee = ID.ConstantVal;
578 if (!isa<PointerType>(Aliasee->getType()))
579 return Error(AliaseeLoc, "alias must have pointer type");
581 // Okay, create the alias but do not insert it into the module yet.
582 GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
583 (GlobalValue::LinkageTypes)Linkage, Name,
585 GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
587 // See if this value already exists in the symbol table. If so, it is either
588 // a redefinition or a definition of a forward reference.
589 if (GlobalValue *Val =
590 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name))) {
591 // See if this was a redefinition. If so, there is no entry in
593 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
594 I = ForwardRefVals.find(Name);
595 if (I == ForwardRefVals.end())
596 return Error(NameLoc, "redefinition of global named '@" + Name + "'");
598 // Otherwise, this was a definition of forward ref. Verify that types
600 if (Val->getType() != GA->getType())
601 return Error(NameLoc,
602 "forward reference and definition of alias have different types");
604 // If they agree, just RAUW the old value with the alias and remove the
606 Val->replaceAllUsesWith(GA);
607 Val->eraseFromParent();
608 ForwardRefVals.erase(I);
611 // Insert into the module, we know its name won't collide now.
612 M->getAliasList().push_back(GA);
613 assert(GA->getNameStr() == Name && "Should not be a name conflict!");
619 /// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
620 /// OptionalAddrSpace GlobalType Type Const
621 /// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
622 /// OptionalAddrSpace GlobalType Type Const
624 /// Everything through visibility has been parsed already.
626 bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
627 unsigned Linkage, bool HasLinkage,
628 unsigned Visibility) {
630 bool ThreadLocal, IsConstant;
633 PATypeHolder Ty(Type::getVoidTy(Context));
634 if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
635 ParseOptionalAddrSpace(AddrSpace) ||
636 ParseGlobalType(IsConstant) ||
637 ParseType(Ty, TyLoc))
640 // If the linkage is specified and is external, then no initializer is
643 if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
644 Linkage != GlobalValue::ExternalWeakLinkage &&
645 Linkage != GlobalValue::ExternalLinkage)) {
646 if (ParseGlobalValue(Ty, Init))
650 if (isa<FunctionType>(Ty) || Ty == Type::getLabelTy(Context))
651 return Error(TyLoc, "invalid type for global variable");
653 GlobalVariable *GV = 0;
655 // See if the global was forward referenced, if so, use the global.
657 if ((GV = M->getGlobalVariable(Name, true)) &&
658 !ForwardRefVals.erase(Name))
659 return Error(NameLoc, "redefinition of global '@" + Name + "'");
661 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
662 I = ForwardRefValIDs.find(NumberedVals.size());
663 if (I != ForwardRefValIDs.end()) {
664 GV = cast<GlobalVariable>(I->second.first);
665 ForwardRefValIDs.erase(I);
670 GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
671 Name, 0, false, AddrSpace);
673 if (GV->getType()->getElementType() != Ty)
675 "forward reference and definition of global have different types");
677 // Move the forward-reference to the correct spot in the module.
678 M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
682 NumberedVals.push_back(GV);
684 // Set the parsed properties on the global.
686 GV->setInitializer(Init);
687 GV->setConstant(IsConstant);
688 GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
689 GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
690 GV->setThreadLocal(ThreadLocal);
692 // Parse attributes on the global.
693 while (Lex.getKind() == lltok::comma) {
696 if (Lex.getKind() == lltok::kw_section) {
698 GV->setSection(Lex.getStrVal());
699 if (ParseToken(lltok::StringConstant, "expected global section string"))
701 } else if (Lex.getKind() == lltok::kw_align) {
703 if (ParseOptionalAlignment(Alignment)) return true;
704 GV->setAlignment(Alignment);
706 TokError("unknown global variable property!");
714 //===----------------------------------------------------------------------===//
715 // GlobalValue Reference/Resolution Routines.
716 //===----------------------------------------------------------------------===//
718 /// GetGlobalVal - Get a value with the specified name or ID, creating a
719 /// forward reference record if needed. This can return null if the value
720 /// exists but does not have the right type.
721 GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
723 const PointerType *PTy = dyn_cast<PointerType>(Ty);
725 Error(Loc, "global variable reference must have pointer type");
729 // Look this name up in the normal function symbol table.
731 cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
733 // If this is a forward reference for the value, see if we already created a
734 // forward ref record.
736 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
737 I = ForwardRefVals.find(Name);
738 if (I != ForwardRefVals.end())
739 Val = I->second.first;
742 // If we have the value in the symbol table or fwd-ref table, return it.
744 if (Val->getType() == Ty) return Val;
745 Error(Loc, "'@" + Name + "' defined with type '" +
746 Val->getType()->getDescription() + "'");
750 // Otherwise, create a new forward reference for this value and remember it.
752 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
753 // Function types can return opaque but functions can't.
754 if (isa<OpaqueType>(FT->getReturnType())) {
755 Error(Loc, "function may not return opaque type");
759 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
761 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
762 GlobalValue::ExternalWeakLinkage, 0, Name);
765 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
769 GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
770 const PointerType *PTy = dyn_cast<PointerType>(Ty);
772 Error(Loc, "global variable reference must have pointer type");
776 GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
778 // If this is a forward reference for the value, see if we already created a
779 // forward ref record.
781 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
782 I = ForwardRefValIDs.find(ID);
783 if (I != ForwardRefValIDs.end())
784 Val = I->second.first;
787 // If we have the value in the symbol table or fwd-ref table, return it.
789 if (Val->getType() == Ty) return Val;
790 Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
791 Val->getType()->getDescription() + "'");
795 // Otherwise, create a new forward reference for this value and remember it.
797 if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
798 // Function types can return opaque but functions can't.
799 if (isa<OpaqueType>(FT->getReturnType())) {
800 Error(Loc, "function may not return opaque type");
803 FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
805 FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
806 GlobalValue::ExternalWeakLinkage, 0, "");
809 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
814 //===----------------------------------------------------------------------===//
816 //===----------------------------------------------------------------------===//
818 /// ParseToken - If the current token has the specified kind, eat it and return
819 /// success. Otherwise, emit the specified error and return failure.
820 bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
821 if (Lex.getKind() != T)
822 return TokError(ErrMsg);
827 /// ParseStringConstant
828 /// ::= StringConstant
829 bool LLParser::ParseStringConstant(std::string &Result) {
830 if (Lex.getKind() != lltok::StringConstant)
831 return TokError("expected string constant");
832 Result = Lex.getStrVal();
839 bool LLParser::ParseUInt32(unsigned &Val) {
840 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
841 return TokError("expected integer");
842 uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
843 if (Val64 != unsigned(Val64))
844 return TokError("expected 32-bit integer (too large)");
851 /// ParseOptionalAddrSpace
853 /// := 'addrspace' '(' uint32 ')'
854 bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
856 if (!EatIfPresent(lltok::kw_addrspace))
858 return ParseToken(lltok::lparen, "expected '(' in address space") ||
859 ParseUInt32(AddrSpace) ||
860 ParseToken(lltok::rparen, "expected ')' in address space");
863 /// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
864 /// indicates what kind of attribute list this is: 0: function arg, 1: result,
865 /// 2: function attr.
866 /// 3: function arg after value: FIXME: REMOVE IN LLVM 3.0
867 bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
868 Attrs = Attribute::None;
869 LocTy AttrLoc = Lex.getLoc();
872 switch (Lex.getKind()) {
875 // Treat these as signext/zeroext if they occur in the argument list after
876 // the value, as in "call i8 @foo(i8 10 sext)". If they occur before the
877 // value, as in "call i8 @foo(i8 sext (" then it is part of a constant
879 // FIXME: REMOVE THIS IN LLVM 3.0
881 if (Lex.getKind() == lltok::kw_sext)
882 Attrs |= Attribute::SExt;
884 Attrs |= Attribute::ZExt;
888 default: // End of attributes.
889 if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
890 return Error(AttrLoc, "invalid use of function-only attribute");
892 if (AttrKind != 0 && AttrKind != 3 && (Attrs & Attribute::ParameterOnly))
893 return Error(AttrLoc, "invalid use of parameter-only attribute");
896 case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
897 case lltok::kw_signext: Attrs |= Attribute::SExt; break;
898 case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
899 case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
900 case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
901 case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
902 case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
903 case lltok::kw_nest: Attrs |= Attribute::Nest; break;
905 case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
906 case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
907 case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
908 case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
909 case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
910 case lltok::kw_inlinehint: Attrs |= Attribute::InlineHint; break;
911 case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
912 case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
913 case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
914 case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
915 case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
916 case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
917 case lltok::kw_naked: Attrs |= Attribute::Naked; break;
919 case lltok::kw_align: {
921 if (ParseOptionalAlignment(Alignment))
923 Attrs |= Attribute::constructAlignmentFromInt(Alignment);
931 /// ParseOptionalLinkage
934 /// ::= 'linker_private'
939 /// ::= 'linkonce_odr'
944 /// ::= 'extern_weak'
946 bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
948 switch (Lex.getKind()) {
949 default: Res=GlobalValue::ExternalLinkage; return false;
950 case lltok::kw_private: Res = GlobalValue::PrivateLinkage; break;
951 case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
952 case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
953 case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
954 case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
955 case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
956 case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
957 case lltok::kw_available_externally:
958 Res = GlobalValue::AvailableExternallyLinkage;
960 case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
961 case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
962 case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
963 case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
964 case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
965 case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
972 /// ParseOptionalVisibility
978 bool LLParser::ParseOptionalVisibility(unsigned &Res) {
979 switch (Lex.getKind()) {
980 default: Res = GlobalValue::DefaultVisibility; return false;
981 case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
982 case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
983 case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
989 /// ParseOptionalCallingConv
994 /// ::= 'x86_stdcallcc'
995 /// ::= 'x86_fastcallcc'
997 /// ::= 'arm_aapcscc'
998 /// ::= 'arm_aapcs_vfpcc'
1001 bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
1002 switch (Lex.getKind()) {
1003 default: CC = CallingConv::C; return false;
1004 case lltok::kw_ccc: CC = CallingConv::C; break;
1005 case lltok::kw_fastcc: CC = CallingConv::Fast; break;
1006 case lltok::kw_coldcc: CC = CallingConv::Cold; break;
1007 case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
1008 case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
1009 case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
1010 case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
1011 case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
1012 case lltok::kw_cc: Lex.Lex(); return ParseUInt32(CC);
1018 /// ParseOptionalAlignment
1021 bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
1023 if (!EatIfPresent(lltok::kw_align))
1025 LocTy AlignLoc = Lex.getLoc();
1026 if (ParseUInt32(Alignment)) return true;
1027 if (!isPowerOf2_32(Alignment))
1028 return Error(AlignLoc, "alignment is not a power of two");
1032 /// ParseOptionalCommaAlignment
1034 /// ::= ',' 'align' 4
1035 bool LLParser::ParseOptionalCommaAlignment(unsigned &Alignment) {
1037 if (!EatIfPresent(lltok::comma))
1039 return ParseToken(lltok::kw_align, "expected 'align'") ||
1040 ParseUInt32(Alignment);
1044 /// ::= (',' uint32)+
1045 bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
1046 if (Lex.getKind() != lltok::comma)
1047 return TokError("expected ',' as start of index list");
1049 while (EatIfPresent(lltok::comma)) {
1051 if (ParseUInt32(Idx)) return true;
1052 Indices.push_back(Idx);
1058 //===----------------------------------------------------------------------===//
1060 //===----------------------------------------------------------------------===//
1062 /// ParseType - Parse and resolve a full type.
1063 bool LLParser::ParseType(PATypeHolder &Result, bool AllowVoid) {
1064 LocTy TypeLoc = Lex.getLoc();
1065 if (ParseTypeRec(Result)) return true;
1067 // Verify no unresolved uprefs.
1068 if (!UpRefs.empty())
1069 return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
1071 if (!AllowVoid && Result.get() == Type::getVoidTy(Context))
1072 return Error(TypeLoc, "void type only allowed for function results");
1077 /// HandleUpRefs - Every time we finish a new layer of types, this function is
1078 /// called. It loops through the UpRefs vector, which is a list of the
1079 /// currently active types. For each type, if the up-reference is contained in
1080 /// the newly completed type, we decrement the level count. When the level
1081 /// count reaches zero, the up-referenced type is the type that is passed in:
1082 /// thus we can complete the cycle.
1084 PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
1085 // If Ty isn't abstract, or if there are no up-references in it, then there is
1086 // nothing to resolve here.
1087 if (!ty->isAbstract() || UpRefs.empty()) return ty;
1089 PATypeHolder Ty(ty);
1091 errs() << "Type '" << Ty->getDescription()
1092 << "' newly formed. Resolving upreferences.\n"
1093 << UpRefs.size() << " upreferences active!\n";
1096 // If we find any resolvable upreferences (i.e., those whose NestingLevel goes
1097 // to zero), we resolve them all together before we resolve them to Ty. At
1098 // the end of the loop, if there is anything to resolve to Ty, it will be in
1100 OpaqueType *TypeToResolve = 0;
1102 for (unsigned i = 0; i != UpRefs.size(); ++i) {
1103 // Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
1105 std::find(Ty->subtype_begin(), Ty->subtype_end(),
1106 UpRefs[i].LastContainedTy) != Ty->subtype_end();
1109 errs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
1110 << UpRefs[i].LastContainedTy->getDescription() << ") = "
1111 << (ContainsType ? "true" : "false")
1112 << " level=" << UpRefs[i].NestingLevel << "\n";
1117 // Decrement level of upreference
1118 unsigned Level = --UpRefs[i].NestingLevel;
1119 UpRefs[i].LastContainedTy = Ty;
1121 // If the Up-reference has a non-zero level, it shouldn't be resolved yet.
1126 errs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
1129 TypeToResolve = UpRefs[i].UpRefTy;
1131 UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
1132 UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
1133 --i; // Do not skip the next element.
1137 TypeToResolve->refineAbstractTypeTo(Ty);
1143 /// ParseTypeRec - The recursive function used to process the internal
1144 /// implementation details of types.
1145 bool LLParser::ParseTypeRec(PATypeHolder &Result) {
1146 switch (Lex.getKind()) {
1148 return TokError("expected type");
1150 // TypeRec ::= 'float' | 'void' (etc)
1151 Result = Lex.getTyVal();
1154 case lltok::kw_opaque:
1155 // TypeRec ::= 'opaque'
1156 Result = OpaqueType::get(Context);
1160 // TypeRec ::= '{' ... '}'
1161 if (ParseStructType(Result, false))
1164 case lltok::lsquare:
1165 // TypeRec ::= '[' ... ']'
1166 Lex.Lex(); // eat the lsquare.
1167 if (ParseArrayVectorType(Result, false))
1170 case lltok::less: // Either vector or packed struct.
1171 // TypeRec ::= '<' ... '>'
1173 if (Lex.getKind() == lltok::lbrace) {
1174 if (ParseStructType(Result, true) ||
1175 ParseToken(lltok::greater, "expected '>' at end of packed struct"))
1177 } else if (ParseArrayVectorType(Result, true))
1180 case lltok::LocalVar:
1181 case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
1183 if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
1186 Result = OpaqueType::get(Context);
1187 ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
1188 std::make_pair(Result,
1190 M->addTypeName(Lex.getStrVal(), Result.get());
1195 case lltok::LocalVarID:
1197 if (Lex.getUIntVal() < NumberedTypes.size())
1198 Result = NumberedTypes[Lex.getUIntVal()];
1200 std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
1201 I = ForwardRefTypeIDs.find(Lex.getUIntVal());
1202 if (I != ForwardRefTypeIDs.end())
1203 Result = I->second.first;
1205 Result = OpaqueType::get(Context);
1206 ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
1207 std::make_pair(Result,
1213 case lltok::backslash: {
1214 // TypeRec ::= '\' 4
1217 if (ParseUInt32(Val)) return true;
1218 OpaqueType *OT = OpaqueType::get(Context); //Use temporary placeholder.
1219 UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
1225 // Parse the type suffixes.
1227 switch (Lex.getKind()) {
1229 default: return false;
1231 // TypeRec ::= TypeRec '*'
1233 if (Result.get() == Type::getLabelTy(Context))
1234 return TokError("basic block pointers are invalid");
1235 if (Result.get() == Type::getVoidTy(Context))
1236 return TokError("pointers to void are invalid; use i8* instead");
1237 if (!PointerType::isValidElementType(Result.get()))
1238 return TokError("pointer to this type is invalid");
1239 Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
1243 // TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
1244 case lltok::kw_addrspace: {
1245 if (Result.get() == Type::getLabelTy(Context))
1246 return TokError("basic block pointers are invalid");
1247 if (Result.get() == Type::getVoidTy(Context))
1248 return TokError("pointers to void are invalid; use i8* instead");
1249 if (!PointerType::isValidElementType(Result.get()))
1250 return TokError("pointer to this type is invalid");
1252 if (ParseOptionalAddrSpace(AddrSpace) ||
1253 ParseToken(lltok::star, "expected '*' in address space"))
1256 Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
1260 /// Types '(' ArgTypeListI ')' OptFuncAttrs
1262 if (ParseFunctionType(Result))
1269 /// ParseParameterList
1271 /// ::= '(' Arg (',' Arg)* ')'
1273 /// ::= Type OptionalAttributes Value OptionalAttributes
1274 bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
1275 PerFunctionState &PFS) {
1276 if (ParseToken(lltok::lparen, "expected '(' in call"))
1279 while (Lex.getKind() != lltok::rparen) {
1280 // If this isn't the first argument, we need a comma.
1281 if (!ArgList.empty() &&
1282 ParseToken(lltok::comma, "expected ',' in argument list"))
1285 // Parse the argument.
1287 PATypeHolder ArgTy(Type::getVoidTy(Context));
1288 unsigned ArgAttrs1, ArgAttrs2;
1290 if (ParseType(ArgTy, ArgLoc) ||
1291 ParseOptionalAttrs(ArgAttrs1, 0) ||
1292 ParseValue(ArgTy, V, PFS) ||
1293 // FIXME: Should not allow attributes after the argument, remove this in
1295 ParseOptionalAttrs(ArgAttrs2, 3))
1297 ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
1300 Lex.Lex(); // Lex the ')'.
1306 /// ParseArgumentList - Parse the argument list for a function type or function
1307 /// prototype. If 'inType' is true then we are parsing a FunctionType.
1308 /// ::= '(' ArgTypeListI ')'
1312 /// ::= ArgTypeList ',' '...'
1313 /// ::= ArgType (',' ArgType)*
1315 bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
1316 bool &isVarArg, bool inType) {
1318 assert(Lex.getKind() == lltok::lparen);
1319 Lex.Lex(); // eat the (.
1321 if (Lex.getKind() == lltok::rparen) {
1323 } else if (Lex.getKind() == lltok::dotdotdot) {
1327 LocTy TypeLoc = Lex.getLoc();
1328 PATypeHolder ArgTy(Type::getVoidTy(Context));
1332 // If we're parsing a type, use ParseTypeRec, because we allow recursive
1333 // types (such as a function returning a pointer to itself). If parsing a
1334 // function prototype, we require fully resolved types.
1335 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1336 ParseOptionalAttrs(Attrs, 0)) return true;
1338 if (ArgTy == Type::getVoidTy(Context))
1339 return Error(TypeLoc, "argument can not have void type");
1341 if (Lex.getKind() == lltok::LocalVar ||
1342 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1343 Name = Lex.getStrVal();
1347 if (!FunctionType::isValidArgumentType(ArgTy))
1348 return Error(TypeLoc, "invalid type for function argument");
1350 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1352 while (EatIfPresent(lltok::comma)) {
1353 // Handle ... at end of arg list.
1354 if (EatIfPresent(lltok::dotdotdot)) {
1359 // Otherwise must be an argument type.
1360 TypeLoc = Lex.getLoc();
1361 if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
1362 ParseOptionalAttrs(Attrs, 0)) return true;
1364 if (ArgTy == Type::getVoidTy(Context))
1365 return Error(TypeLoc, "argument can not have void type");
1367 if (Lex.getKind() == lltok::LocalVar ||
1368 Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
1369 Name = Lex.getStrVal();
1375 if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
1376 return Error(TypeLoc, "invalid type for function argument");
1378 ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
1382 return ParseToken(lltok::rparen, "expected ')' at end of argument list");
1385 /// ParseFunctionType
1386 /// ::= Type ArgumentList OptionalAttrs
1387 bool LLParser::ParseFunctionType(PATypeHolder &Result) {
1388 assert(Lex.getKind() == lltok::lparen);
1390 if (!FunctionType::isValidReturnType(Result))
1391 return TokError("invalid function return type");
1393 std::vector<ArgInfo> ArgList;
1396 if (ParseArgumentList(ArgList, isVarArg, true) ||
1397 // FIXME: Allow, but ignore attributes on function types!
1398 // FIXME: Remove in LLVM 3.0
1399 ParseOptionalAttrs(Attrs, 2))
1402 // Reject names on the arguments lists.
1403 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
1404 if (!ArgList[i].Name.empty())
1405 return Error(ArgList[i].Loc, "argument name invalid in function type");
1406 if (!ArgList[i].Attrs != 0) {
1407 // Allow but ignore attributes on function types; this permits
1409 // FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
1413 std::vector<const Type*> ArgListTy;
1414 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
1415 ArgListTy.push_back(ArgList[i].Type);
1417 Result = HandleUpRefs(FunctionType::get(Result.get(),
1418 ArgListTy, isVarArg));
1422 /// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
1425 /// ::= '{' TypeRec (',' TypeRec)* '}'
1426 /// ::= '<' '{' '}' '>'
1427 /// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
1428 bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
1429 assert(Lex.getKind() == lltok::lbrace);
1430 Lex.Lex(); // Consume the '{'
1432 if (EatIfPresent(lltok::rbrace)) {
1433 Result = StructType::get(Context, Packed);
1437 std::vector<PATypeHolder> ParamsList;
1438 LocTy EltTyLoc = Lex.getLoc();
1439 if (ParseTypeRec(Result)) return true;
1440 ParamsList.push_back(Result);
1442 if (Result == Type::getVoidTy(Context))
1443 return Error(EltTyLoc, "struct element can not have void type");
1444 if (!StructType::isValidElementType(Result))
1445 return Error(EltTyLoc, "invalid element type for struct");
1447 while (EatIfPresent(lltok::comma)) {
1448 EltTyLoc = Lex.getLoc();
1449 if (ParseTypeRec(Result)) return true;
1451 if (Result == Type::getVoidTy(Context))
1452 return Error(EltTyLoc, "struct element can not have void type");
1453 if (!StructType::isValidElementType(Result))
1454 return Error(EltTyLoc, "invalid element type for struct");
1456 ParamsList.push_back(Result);
1459 if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
1462 std::vector<const Type*> ParamsListTy;
1463 for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
1464 ParamsListTy.push_back(ParamsList[i].get());
1465 Result = HandleUpRefs(StructType::get(Context, ParamsListTy, Packed));
1469 /// ParseArrayVectorType - Parse an array or vector type, assuming the first
1470 /// token has already been consumed.
1472 /// ::= '[' APSINTVAL 'x' Types ']'
1473 /// ::= '<' APSINTVAL 'x' Types '>'
1474 bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
1475 if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
1476 Lex.getAPSIntVal().getBitWidth() > 64)
1477 return TokError("expected number in address space");
1479 LocTy SizeLoc = Lex.getLoc();
1480 uint64_t Size = Lex.getAPSIntVal().getZExtValue();
1483 if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
1486 LocTy TypeLoc = Lex.getLoc();
1487 PATypeHolder EltTy(Type::getVoidTy(Context));
1488 if (ParseTypeRec(EltTy)) return true;
1490 if (EltTy == Type::getVoidTy(Context))
1491 return Error(TypeLoc, "array and vector element type cannot be void");
1493 if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
1494 "expected end of sequential type"))
1499 return Error(SizeLoc, "zero element vector is illegal");
1500 if ((unsigned)Size != Size)
1501 return Error(SizeLoc, "size too large for vector");
1502 if (!VectorType::isValidElementType(EltTy))
1503 return Error(TypeLoc, "vector element type must be fp or integer");
1504 Result = VectorType::get(EltTy, unsigned(Size));
1506 if (!ArrayType::isValidElementType(EltTy))
1507 return Error(TypeLoc, "invalid array element type");
1508 Result = HandleUpRefs(ArrayType::get(EltTy, Size));
1513 //===----------------------------------------------------------------------===//
1514 // Function Semantic Analysis.
1515 //===----------------------------------------------------------------------===//
1517 LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f)
1520 // Insert unnamed arguments into the NumberedVals list.
1521 for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
1524 NumberedVals.push_back(AI);
1527 LLParser::PerFunctionState::~PerFunctionState() {
1528 // If there were any forward referenced non-basicblock values, delete them.
1529 for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
1530 I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
1531 if (!isa<BasicBlock>(I->second.first)) {
1532 I->second.first->replaceAllUsesWith(
1533 UndefValue::get(I->second.first->getType()));
1534 delete I->second.first;
1535 I->second.first = 0;
1538 for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1539 I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
1540 if (!isa<BasicBlock>(I->second.first)) {
1541 I->second.first->replaceAllUsesWith(
1542 UndefValue::get(I->second.first->getType()));
1543 delete I->second.first;
1544 I->second.first = 0;
1548 bool LLParser::PerFunctionState::VerifyFunctionComplete() {
1549 if (!ForwardRefVals.empty())
1550 return P.Error(ForwardRefVals.begin()->second.second,
1551 "use of undefined value '%" + ForwardRefVals.begin()->first +
1553 if (!ForwardRefValIDs.empty())
1554 return P.Error(ForwardRefValIDs.begin()->second.second,
1555 "use of undefined value '%" +
1556 utostr(ForwardRefValIDs.begin()->first) + "'");
1561 /// GetVal - Get a value with the specified name or ID, creating a
1562 /// forward reference record if needed. This can return null if the value
1563 /// exists but does not have the right type.
1564 Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
1565 const Type *Ty, LocTy Loc) {
1566 // Look this name up in the normal function symbol table.
1567 Value *Val = F.getValueSymbolTable().lookup(Name);
1569 // If this is a forward reference for the value, see if we already created a
1570 // forward ref record.
1572 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1573 I = ForwardRefVals.find(Name);
1574 if (I != ForwardRefVals.end())
1575 Val = I->second.first;
1578 // If we have the value in the symbol table or fwd-ref table, return it.
1580 if (Val->getType() == Ty) return Val;
1581 if (Ty == Type::getLabelTy(F.getContext()))
1582 P.Error(Loc, "'%" + Name + "' is not a basic block");
1584 P.Error(Loc, "'%" + Name + "' defined with type '" +
1585 Val->getType()->getDescription() + "'");
1589 // Don't make placeholders with invalid type.
1590 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1591 Ty != Type::getLabelTy(F.getContext())) {
1592 P.Error(Loc, "invalid use of a non-first-class type");
1596 // Otherwise, create a new forward reference for this value and remember it.
1598 if (Ty == Type::getLabelTy(F.getContext()))
1599 FwdVal = BasicBlock::Create(F.getContext(), Name, &F);
1601 FwdVal = new Argument(Ty, Name);
1603 ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
1607 Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
1609 // Look this name up in the normal function symbol table.
1610 Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
1612 // If this is a forward reference for the value, see if we already created a
1613 // forward ref record.
1615 std::map<unsigned, std::pair<Value*, LocTy> >::iterator
1616 I = ForwardRefValIDs.find(ID);
1617 if (I != ForwardRefValIDs.end())
1618 Val = I->second.first;
1621 // If we have the value in the symbol table or fwd-ref table, return it.
1623 if (Val->getType() == Ty) return Val;
1624 if (Ty == Type::getLabelTy(F.getContext()))
1625 P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
1627 P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
1628 Val->getType()->getDescription() + "'");
1632 if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) &&
1633 Ty != Type::getLabelTy(F.getContext())) {
1634 P.Error(Loc, "invalid use of a non-first-class type");
1638 // Otherwise, create a new forward reference for this value and remember it.
1640 if (Ty == Type::getLabelTy(F.getContext()))
1641 FwdVal = BasicBlock::Create(F.getContext(), "", &F);
1643 FwdVal = new Argument(Ty);
1645 ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
1649 /// SetInstName - After an instruction is parsed and inserted into its
1650 /// basic block, this installs its name.
1651 bool LLParser::PerFunctionState::SetInstName(int NameID,
1652 const std::string &NameStr,
1653 LocTy NameLoc, Instruction *Inst) {
1654 // If this instruction has void type, it cannot have a name or ID specified.
1655 if (Inst->getType() == Type::getVoidTy(F.getContext())) {
1656 if (NameID != -1 || !NameStr.empty())
1657 return P.Error(NameLoc, "instructions returning void cannot have a name");
1661 // If this was a numbered instruction, verify that the instruction is the
1662 // expected value and resolve any forward references.
1663 if (NameStr.empty()) {
1664 // If neither a name nor an ID was specified, just use the next ID.
1666 NameID = NumberedVals.size();
1668 if (unsigned(NameID) != NumberedVals.size())
1669 return P.Error(NameLoc, "instruction expected to be numbered '%" +
1670 utostr(NumberedVals.size()) + "'");
1672 std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
1673 ForwardRefValIDs.find(NameID);
1674 if (FI != ForwardRefValIDs.end()) {
1675 if (FI->second.first->getType() != Inst->getType())
1676 return P.Error(NameLoc, "instruction forward referenced with type '" +
1677 FI->second.first->getType()->getDescription() + "'");
1678 FI->second.first->replaceAllUsesWith(Inst);
1679 ForwardRefValIDs.erase(FI);
1682 NumberedVals.push_back(Inst);
1686 // Otherwise, the instruction had a name. Resolve forward refs and set it.
1687 std::map<std::string, std::pair<Value*, LocTy> >::iterator
1688 FI = ForwardRefVals.find(NameStr);
1689 if (FI != ForwardRefVals.end()) {
1690 if (FI->second.first->getType() != Inst->getType())
1691 return P.Error(NameLoc, "instruction forward referenced with type '" +
1692 FI->second.first->getType()->getDescription() + "'");
1693 FI->second.first->replaceAllUsesWith(Inst);
1694 ForwardRefVals.erase(FI);
1697 // Set the name on the instruction.
1698 Inst->setName(NameStr);
1700 if (Inst->getNameStr() != NameStr)
1701 return P.Error(NameLoc, "multiple definition of local value named '" +
1706 /// GetBB - Get a basic block with the specified name or ID, creating a
1707 /// forward reference record if needed.
1708 BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
1710 return cast_or_null<BasicBlock>(GetVal(Name,
1711 Type::getLabelTy(F.getContext()), Loc));
1714 BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
1715 return cast_or_null<BasicBlock>(GetVal(ID,
1716 Type::getLabelTy(F.getContext()), Loc));
1719 /// DefineBB - Define the specified basic block, which is either named or
1720 /// unnamed. If there is an error, this returns null otherwise it returns
1721 /// the block being defined.
1722 BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
1726 BB = GetBB(NumberedVals.size(), Loc);
1728 BB = GetBB(Name, Loc);
1729 if (BB == 0) return 0; // Already diagnosed error.
1731 // Move the block to the end of the function. Forward ref'd blocks are
1732 // inserted wherever they happen to be referenced.
1733 F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
1735 // Remove the block from forward ref sets.
1737 ForwardRefValIDs.erase(NumberedVals.size());
1738 NumberedVals.push_back(BB);
1740 // BB forward references are already in the function symbol table.
1741 ForwardRefVals.erase(Name);
1747 //===----------------------------------------------------------------------===//
1749 //===----------------------------------------------------------------------===//
1751 /// ParseValID - Parse an abstract value that doesn't necessarily have a
1752 /// type implied. For example, if we parse "4" we don't know what integer type
1753 /// it has. The value will later be combined with its type and checked for
1755 bool LLParser::ParseValID(ValID &ID) {
1756 ID.Loc = Lex.getLoc();
1757 switch (Lex.getKind()) {
1758 default: return TokError("expected value token");
1759 case lltok::GlobalID: // @42
1760 ID.UIntVal = Lex.getUIntVal();
1761 ID.Kind = ValID::t_GlobalID;
1763 case lltok::GlobalVar: // @foo
1764 ID.StrVal = Lex.getStrVal();
1765 ID.Kind = ValID::t_GlobalName;
1767 case lltok::LocalVarID: // %42
1768 ID.UIntVal = Lex.getUIntVal();
1769 ID.Kind = ValID::t_LocalID;
1771 case lltok::LocalVar: // %foo
1772 case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
1773 ID.StrVal = Lex.getStrVal();
1774 ID.Kind = ValID::t_LocalName;
1776 case lltok::Metadata: { // !{...} MDNode, !"foo" MDString
1777 ID.Kind = ValID::t_Metadata;
1779 if (Lex.getKind() == lltok::lbrace) {
1780 SmallVector<Value*, 16> Elts;
1781 if (ParseMDNodeVector(Elts) ||
1782 ParseToken(lltok::rbrace, "expected end of metadata node"))
1785 ID.MetadataVal = MDNode::get(Context, Elts.data(), Elts.size());
1789 // Standalone metadata reference
1790 // !{ ..., !42, ... }
1791 if (!ParseMDNode(ID.MetadataVal))
1795 // ::= '!' STRINGCONSTANT
1796 if (ParseMDString(ID.MetadataVal)) return true;
1797 ID.Kind = ValID::t_Metadata;
1801 ID.APSIntVal = Lex.getAPSIntVal();
1802 ID.Kind = ValID::t_APSInt;
1804 case lltok::APFloat:
1805 ID.APFloatVal = Lex.getAPFloatVal();
1806 ID.Kind = ValID::t_APFloat;
1808 case lltok::kw_true:
1809 ID.ConstantVal = ConstantInt::getTrue(Context);
1810 ID.Kind = ValID::t_Constant;
1812 case lltok::kw_false:
1813 ID.ConstantVal = ConstantInt::getFalse(Context);
1814 ID.Kind = ValID::t_Constant;
1816 case lltok::kw_null: ID.Kind = ValID::t_Null; break;
1817 case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
1818 case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
1820 case lltok::lbrace: {
1821 // ValID ::= '{' ConstVector '}'
1823 SmallVector<Constant*, 16> Elts;
1824 if (ParseGlobalValueVector(Elts) ||
1825 ParseToken(lltok::rbrace, "expected end of struct constant"))
1828 ID.ConstantVal = ConstantStruct::get(Context, Elts.data(),
1829 Elts.size(), false);
1830 ID.Kind = ValID::t_Constant;
1834 // ValID ::= '<' ConstVector '>' --> Vector.
1835 // ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
1837 bool isPackedStruct = EatIfPresent(lltok::lbrace);
1839 SmallVector<Constant*, 16> Elts;
1840 LocTy FirstEltLoc = Lex.getLoc();
1841 if (ParseGlobalValueVector(Elts) ||
1843 ParseToken(lltok::rbrace, "expected end of packed struct")) ||
1844 ParseToken(lltok::greater, "expected end of constant"))
1847 if (isPackedStruct) {
1849 ConstantStruct::get(Context, Elts.data(), Elts.size(), true);
1850 ID.Kind = ValID::t_Constant;
1855 return Error(ID.Loc, "constant vector must not be empty");
1857 if (!Elts[0]->getType()->isInteger() &&
1858 !Elts[0]->getType()->isFloatingPoint())
1859 return Error(FirstEltLoc,
1860 "vector elements must have integer or floating point type");
1862 // Verify that all the vector elements have the same type.
1863 for (unsigned i = 1, e = Elts.size(); i != e; ++i)
1864 if (Elts[i]->getType() != Elts[0]->getType())
1865 return Error(FirstEltLoc,
1866 "vector element #" + utostr(i) +
1867 " is not of type '" + Elts[0]->getType()->getDescription());
1869 ID.ConstantVal = ConstantVector::get(Elts.data(), Elts.size());
1870 ID.Kind = ValID::t_Constant;
1873 case lltok::lsquare: { // Array Constant
1875 SmallVector<Constant*, 16> Elts;
1876 LocTy FirstEltLoc = Lex.getLoc();
1877 if (ParseGlobalValueVector(Elts) ||
1878 ParseToken(lltok::rsquare, "expected end of array constant"))
1881 // Handle empty element.
1883 // Use undef instead of an array because it's inconvenient to determine
1884 // the element type at this point, there being no elements to examine.
1885 ID.Kind = ValID::t_EmptyArray;
1889 if (!Elts[0]->getType()->isFirstClassType())
1890 return Error(FirstEltLoc, "invalid array element type: " +
1891 Elts[0]->getType()->getDescription());
1893 ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
1895 // Verify all elements are correct type!
1896 for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
1897 if (Elts[i]->getType() != Elts[0]->getType())
1898 return Error(FirstEltLoc,
1899 "array element #" + utostr(i) +
1900 " is not of type '" +Elts[0]->getType()->getDescription());
1903 ID.ConstantVal = ConstantArray::get(ATy, Elts.data(), Elts.size());
1904 ID.Kind = ValID::t_Constant;
1907 case lltok::kw_c: // c "foo"
1909 ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
1910 if (ParseToken(lltok::StringConstant, "expected string")) return true;
1911 ID.Kind = ValID::t_Constant;
1914 case lltok::kw_asm: {
1915 // ValID ::= 'asm' SideEffect? STRINGCONSTANT ',' STRINGCONSTANT
1918 if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
1919 ParseStringConstant(ID.StrVal) ||
1920 ParseToken(lltok::comma, "expected comma in inline asm expression") ||
1921 ParseToken(lltok::StringConstant, "expected constraint string"))
1923 ID.StrVal2 = Lex.getStrVal();
1924 ID.UIntVal = HasSideEffect;
1925 ID.Kind = ValID::t_InlineAsm;
1929 case lltok::kw_trunc:
1930 case lltok::kw_zext:
1931 case lltok::kw_sext:
1932 case lltok::kw_fptrunc:
1933 case lltok::kw_fpext:
1934 case lltok::kw_bitcast:
1935 case lltok::kw_uitofp:
1936 case lltok::kw_sitofp:
1937 case lltok::kw_fptoui:
1938 case lltok::kw_fptosi:
1939 case lltok::kw_inttoptr:
1940 case lltok::kw_ptrtoint: {
1941 unsigned Opc = Lex.getUIntVal();
1942 PATypeHolder DestTy(Type::getVoidTy(Context));
1945 if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
1946 ParseGlobalTypeAndValue(SrcVal) ||
1947 ParseToken(lltok::kw_to, "expected 'to' in constantexpr cast") ||
1948 ParseType(DestTy) ||
1949 ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
1951 if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
1952 return Error(ID.Loc, "invalid cast opcode for cast from '" +
1953 SrcVal->getType()->getDescription() + "' to '" +
1954 DestTy->getDescription() + "'");
1955 ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc,
1957 ID.Kind = ValID::t_Constant;
1960 case lltok::kw_extractvalue: {
1963 SmallVector<unsigned, 4> Indices;
1964 if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
1965 ParseGlobalTypeAndValue(Val) ||
1966 ParseIndexList(Indices) ||
1967 ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
1969 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
1970 return Error(ID.Loc, "extractvalue operand must be array or struct");
1971 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
1973 return Error(ID.Loc, "invalid indices for extractvalue");
1975 ConstantExpr::getExtractValue(Val, Indices.data(), Indices.size());
1976 ID.Kind = ValID::t_Constant;
1979 case lltok::kw_insertvalue: {
1981 Constant *Val0, *Val1;
1982 SmallVector<unsigned, 4> Indices;
1983 if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
1984 ParseGlobalTypeAndValue(Val0) ||
1985 ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
1986 ParseGlobalTypeAndValue(Val1) ||
1987 ParseIndexList(Indices) ||
1988 ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
1990 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
1991 return Error(ID.Loc, "extractvalue operand must be array or struct");
1992 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
1994 return Error(ID.Loc, "invalid indices for insertvalue");
1995 ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
1996 Indices.data(), Indices.size());
1997 ID.Kind = ValID::t_Constant;
2000 case lltok::kw_icmp:
2001 case lltok::kw_fcmp: {
2002 unsigned PredVal, Opc = Lex.getUIntVal();
2003 Constant *Val0, *Val1;
2005 if (ParseCmpPredicate(PredVal, Opc) ||
2006 ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
2007 ParseGlobalTypeAndValue(Val0) ||
2008 ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
2009 ParseGlobalTypeAndValue(Val1) ||
2010 ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
2013 if (Val0->getType() != Val1->getType())
2014 return Error(ID.Loc, "compare operands must have the same type");
2016 CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
2018 if (Opc == Instruction::FCmp) {
2019 if (!Val0->getType()->isFPOrFPVector())
2020 return Error(ID.Loc, "fcmp requires floating point operands");
2021 ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
2023 assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
2024 if (!Val0->getType()->isIntOrIntVector() &&
2025 !isa<PointerType>(Val0->getType()))
2026 return Error(ID.Loc, "icmp requires pointer or integer operands");
2027 ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
2029 ID.Kind = ValID::t_Constant;
2033 // Binary Operators.
2035 case lltok::kw_fadd:
2037 case lltok::kw_fsub:
2039 case lltok::kw_fmul:
2040 case lltok::kw_udiv:
2041 case lltok::kw_sdiv:
2042 case lltok::kw_fdiv:
2043 case lltok::kw_urem:
2044 case lltok::kw_srem:
2045 case lltok::kw_frem: {
2049 unsigned Opc = Lex.getUIntVal();
2050 Constant *Val0, *Val1;
2052 LocTy ModifierLoc = Lex.getLoc();
2053 if (Opc == Instruction::Add ||
2054 Opc == Instruction::Sub ||
2055 Opc == Instruction::Mul) {
2056 if (EatIfPresent(lltok::kw_nuw))
2058 if (EatIfPresent(lltok::kw_nsw)) {
2060 if (EatIfPresent(lltok::kw_nuw))
2063 } else if (Opc == Instruction::SDiv) {
2064 if (EatIfPresent(lltok::kw_exact))
2067 if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
2068 ParseGlobalTypeAndValue(Val0) ||
2069 ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
2070 ParseGlobalTypeAndValue(Val1) ||
2071 ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
2073 if (Val0->getType() != Val1->getType())
2074 return Error(ID.Loc, "operands of constexpr must have same type");
2075 if (!Val0->getType()->isIntOrIntVector()) {
2077 return Error(ModifierLoc, "nuw only applies to integer operations");
2079 return Error(ModifierLoc, "nsw only applies to integer operations");
2081 // API compatibility: Accept either integer or floating-point types with
2082 // add, sub, and mul.
2083 if (!Val0->getType()->isIntOrIntVector() &&
2084 !Val0->getType()->isFPOrFPVector())
2085 return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
2086 Constant *C = ConstantExpr::get(Opc, Val0, Val1);
2088 cast<OverflowingBinaryOperator>(C)->setHasNoUnsignedWrap(true);
2090 cast<OverflowingBinaryOperator>(C)->setHasNoSignedWrap(true);
2092 cast<SDivOperator>(C)->setIsExact(true);
2094 ID.Kind = ValID::t_Constant;
2098 // Logical Operations
2100 case lltok::kw_lshr:
2101 case lltok::kw_ashr:
2104 case lltok::kw_xor: {
2105 unsigned Opc = Lex.getUIntVal();
2106 Constant *Val0, *Val1;
2108 if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
2109 ParseGlobalTypeAndValue(Val0) ||
2110 ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
2111 ParseGlobalTypeAndValue(Val1) ||
2112 ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
2114 if (Val0->getType() != Val1->getType())
2115 return Error(ID.Loc, "operands of constexpr must have same type");
2116 if (!Val0->getType()->isIntOrIntVector())
2117 return Error(ID.Loc,
2118 "constexpr requires integer or integer vector operands");
2119 ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
2120 ID.Kind = ValID::t_Constant;
2124 case lltok::kw_getelementptr:
2125 case lltok::kw_shufflevector:
2126 case lltok::kw_insertelement:
2127 case lltok::kw_extractelement:
2128 case lltok::kw_select: {
2129 unsigned Opc = Lex.getUIntVal();
2130 SmallVector<Constant*, 16> Elts;
2131 bool InBounds = false;
2133 if (Opc == Instruction::GetElementPtr)
2134 InBounds = EatIfPresent(lltok::kw_inbounds);
2135 if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
2136 ParseGlobalValueVector(Elts) ||
2137 ParseToken(lltok::rparen, "expected ')' in constantexpr"))
2140 if (Opc == Instruction::GetElementPtr) {
2141 if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
2142 return Error(ID.Loc, "getelementptr requires pointer operand");
2144 if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
2145 (Value**)(Elts.data() + 1),
2147 return Error(ID.Loc, "invalid indices for getelementptr");
2148 ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0],
2149 Elts.data() + 1, Elts.size() - 1);
2151 cast<GEPOperator>(ID.ConstantVal)->setIsInBounds(true);
2152 } else if (Opc == Instruction::Select) {
2153 if (Elts.size() != 3)
2154 return Error(ID.Loc, "expected three operands to select");
2155 if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
2157 return Error(ID.Loc, Reason);
2158 ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
2159 } else if (Opc == Instruction::ShuffleVector) {
2160 if (Elts.size() != 3)
2161 return Error(ID.Loc, "expected three operands to shufflevector");
2162 if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2163 return Error(ID.Loc, "invalid operands to shufflevector");
2165 ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
2166 } else if (Opc == Instruction::ExtractElement) {
2167 if (Elts.size() != 2)
2168 return Error(ID.Loc, "expected two operands to extractelement");
2169 if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
2170 return Error(ID.Loc, "invalid extractelement operands");
2171 ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
2173 assert(Opc == Instruction::InsertElement && "Unknown opcode");
2174 if (Elts.size() != 3)
2175 return Error(ID.Loc, "expected three operands to insertelement");
2176 if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
2177 return Error(ID.Loc, "invalid insertelement operands");
2179 ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
2182 ID.Kind = ValID::t_Constant;
2191 /// ParseGlobalValue - Parse a global value with the specified type.
2192 bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
2195 return ParseValID(ID) ||
2196 ConvertGlobalValIDToValue(Ty, ID, V);
2199 /// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
2201 bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
2203 if (isa<FunctionType>(Ty))
2204 return Error(ID.Loc, "functions are not values, refer to them as pointers");
2207 default: llvm_unreachable("Unknown ValID!");
2208 case ValID::t_Metadata:
2209 return Error(ID.Loc, "invalid use of metadata");
2210 case ValID::t_LocalID:
2211 case ValID::t_LocalName:
2212 return Error(ID.Loc, "invalid use of function-local name");
2213 case ValID::t_InlineAsm:
2214 return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
2215 case ValID::t_GlobalName:
2216 V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
2218 case ValID::t_GlobalID:
2219 V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
2221 case ValID::t_APSInt:
2222 if (!isa<IntegerType>(Ty))
2223 return Error(ID.Loc, "integer constant must have integer type");
2224 ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
2225 V = ConstantInt::get(Context, ID.APSIntVal);
2227 case ValID::t_APFloat:
2228 if (!Ty->isFloatingPoint() ||
2229 !ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
2230 return Error(ID.Loc, "floating point constant invalid for type");
2232 // The lexer has no type info, so builds all float and double FP constants
2233 // as double. Fix this here. Long double does not need this.
2234 if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
2235 Ty == Type::getFloatTy(Context)) {
2237 ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
2240 V = ConstantFP::get(Context, ID.APFloatVal);
2242 if (V->getType() != Ty)
2243 return Error(ID.Loc, "floating point constant does not have type '" +
2244 Ty->getDescription() + "'");
2248 if (!isa<PointerType>(Ty))
2249 return Error(ID.Loc, "null must be a pointer type");
2250 V = ConstantPointerNull::get(cast<PointerType>(Ty));
2252 case ValID::t_Undef:
2253 // FIXME: LabelTy should not be a first-class type.
2254 if ((!Ty->isFirstClassType() || Ty == Type::getLabelTy(Context)) &&
2255 !isa<OpaqueType>(Ty))
2256 return Error(ID.Loc, "invalid type for undef constant");
2257 V = UndefValue::get(Ty);
2259 case ValID::t_EmptyArray:
2260 if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
2261 return Error(ID.Loc, "invalid empty array initializer");
2262 V = UndefValue::get(Ty);
2265 // FIXME: LabelTy should not be a first-class type.
2266 if (!Ty->isFirstClassType() || Ty == Type::getLabelTy(Context))
2267 return Error(ID.Loc, "invalid type for null constant");
2268 V = Constant::getNullValue(Ty);
2270 case ValID::t_Constant:
2271 if (ID.ConstantVal->getType() != Ty)
2272 return Error(ID.Loc, "constant expression type mismatch");
2278 bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
2279 PATypeHolder Type(Type::getVoidTy(Context));
2280 return ParseType(Type) ||
2281 ParseGlobalValue(Type, V);
2284 /// ParseGlobalValueVector
2286 /// ::= TypeAndValue (',' TypeAndValue)*
2287 bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
2289 if (Lex.getKind() == lltok::rbrace ||
2290 Lex.getKind() == lltok::rsquare ||
2291 Lex.getKind() == lltok::greater ||
2292 Lex.getKind() == lltok::rparen)
2296 if (ParseGlobalTypeAndValue(C)) return true;
2299 while (EatIfPresent(lltok::comma)) {
2300 if (ParseGlobalTypeAndValue(C)) return true;
2308 //===----------------------------------------------------------------------===//
2309 // Function Parsing.
2310 //===----------------------------------------------------------------------===//
2312 bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
2313 PerFunctionState &PFS) {
2314 if (ID.Kind == ValID::t_LocalID)
2315 V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
2316 else if (ID.Kind == ValID::t_LocalName)
2317 V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
2318 else if (ID.Kind == ValID::t_InlineAsm) {
2319 const PointerType *PTy = dyn_cast<PointerType>(Ty);
2320 const FunctionType *FTy =
2321 PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
2322 if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
2323 return Error(ID.Loc, "invalid type for inline asm constraint string");
2324 V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
2326 } else if (ID.Kind == ValID::t_Metadata) {
2330 if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
2338 bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
2341 return ParseValID(ID) ||
2342 ConvertValIDToValue(Ty, ID, V, PFS);
2345 bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
2346 PATypeHolder T(Type::getVoidTy(Context));
2347 return ParseType(T) ||
2348 ParseValue(T, V, PFS);
2352 /// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
2353 /// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
2354 /// OptionalAlign OptGC
2355 bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
2356 // Parse the linkage.
2357 LocTy LinkageLoc = Lex.getLoc();
2360 unsigned Visibility, CC, RetAttrs;
2361 PATypeHolder RetType(Type::getVoidTy(Context));
2362 LocTy RetTypeLoc = Lex.getLoc();
2363 if (ParseOptionalLinkage(Linkage) ||
2364 ParseOptionalVisibility(Visibility) ||
2365 ParseOptionalCallingConv(CC) ||
2366 ParseOptionalAttrs(RetAttrs, 1) ||
2367 ParseType(RetType, RetTypeLoc, true /*void allowed*/))
2370 // Verify that the linkage is ok.
2371 switch ((GlobalValue::LinkageTypes)Linkage) {
2372 case GlobalValue::ExternalLinkage:
2373 break; // always ok.
2374 case GlobalValue::DLLImportLinkage:
2375 case GlobalValue::ExternalWeakLinkage:
2377 return Error(LinkageLoc, "invalid linkage for function definition");
2379 case GlobalValue::PrivateLinkage:
2380 case GlobalValue::LinkerPrivateLinkage:
2381 case GlobalValue::InternalLinkage:
2382 case GlobalValue::AvailableExternallyLinkage:
2383 case GlobalValue::LinkOnceAnyLinkage:
2384 case GlobalValue::LinkOnceODRLinkage:
2385 case GlobalValue::WeakAnyLinkage:
2386 case GlobalValue::WeakODRLinkage:
2387 case GlobalValue::DLLExportLinkage:
2389 return Error(LinkageLoc, "invalid linkage for function declaration");
2391 case GlobalValue::AppendingLinkage:
2392 case GlobalValue::GhostLinkage:
2393 case GlobalValue::CommonLinkage:
2394 return Error(LinkageLoc, "invalid function linkage type");
2397 if (!FunctionType::isValidReturnType(RetType) ||
2398 isa<OpaqueType>(RetType))
2399 return Error(RetTypeLoc, "invalid function return type");
2401 LocTy NameLoc = Lex.getLoc();
2403 std::string FunctionName;
2404 if (Lex.getKind() == lltok::GlobalVar) {
2405 FunctionName = Lex.getStrVal();
2406 } else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
2407 unsigned NameID = Lex.getUIntVal();
2409 if (NameID != NumberedVals.size())
2410 return TokError("function expected to be numbered '%" +
2411 utostr(NumberedVals.size()) + "'");
2413 return TokError("expected function name");
2418 if (Lex.getKind() != lltok::lparen)
2419 return TokError("expected '(' in function argument list");
2421 std::vector<ArgInfo> ArgList;
2424 std::string Section;
2428 if (ParseArgumentList(ArgList, isVarArg, false) ||
2429 ParseOptionalAttrs(FuncAttrs, 2) ||
2430 (EatIfPresent(lltok::kw_section) &&
2431 ParseStringConstant(Section)) ||
2432 ParseOptionalAlignment(Alignment) ||
2433 (EatIfPresent(lltok::kw_gc) &&
2434 ParseStringConstant(GC)))
2437 // If the alignment was parsed as an attribute, move to the alignment field.
2438 if (FuncAttrs & Attribute::Alignment) {
2439 Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
2440 FuncAttrs &= ~Attribute::Alignment;
2443 // Okay, if we got here, the function is syntactically valid. Convert types
2444 // and do semantic checks.
2445 std::vector<const Type*> ParamTypeList;
2446 SmallVector<AttributeWithIndex, 8> Attrs;
2447 // FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
2449 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2450 if (FuncAttrs & ObsoleteFuncAttrs) {
2451 RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
2452 FuncAttrs &= ~ObsoleteFuncAttrs;
2455 if (RetAttrs != Attribute::None)
2456 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2458 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2459 ParamTypeList.push_back(ArgList[i].Type);
2460 if (ArgList[i].Attrs != Attribute::None)
2461 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
2464 if (FuncAttrs != Attribute::None)
2465 Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
2467 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
2469 if (PAL.paramHasAttr(1, Attribute::StructRet) &&
2470 RetType != Type::getVoidTy(Context))
2471 return Error(RetTypeLoc, "functions with 'sret' argument must return void");
2473 const FunctionType *FT =
2474 FunctionType::get(RetType, ParamTypeList, isVarArg);
2475 const PointerType *PFT = PointerType::getUnqual(FT);
2478 if (!FunctionName.empty()) {
2479 // If this was a definition of a forward reference, remove the definition
2480 // from the forward reference table and fill in the forward ref.
2481 std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
2482 ForwardRefVals.find(FunctionName);
2483 if (FRVI != ForwardRefVals.end()) {
2484 Fn = M->getFunction(FunctionName);
2485 ForwardRefVals.erase(FRVI);
2486 } else if ((Fn = M->getFunction(FunctionName))) {
2487 // If this function already exists in the symbol table, then it is
2488 // multiply defined. We accept a few cases for old backwards compat.
2489 // FIXME: Remove this stuff for LLVM 3.0.
2490 if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
2491 (!Fn->isDeclaration() && isDefine)) {
2492 // If the redefinition has different type or different attributes,
2493 // reject it. If both have bodies, reject it.
2494 return Error(NameLoc, "invalid redefinition of function '" +
2495 FunctionName + "'");
2496 } else if (Fn->isDeclaration()) {
2497 // Make sure to strip off any argument names so we can't get conflicts.
2498 for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
2505 // If this is a definition of a forward referenced function, make sure the
2507 std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
2508 = ForwardRefValIDs.find(NumberedVals.size());
2509 if (I != ForwardRefValIDs.end()) {
2510 Fn = cast<Function>(I->second.first);
2511 if (Fn->getType() != PFT)
2512 return Error(NameLoc, "type of definition and forward reference of '@" +
2513 utostr(NumberedVals.size()) +"' disagree");
2514 ForwardRefValIDs.erase(I);
2519 Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
2520 else // Move the forward-reference to the correct spot in the module.
2521 M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
2523 if (FunctionName.empty())
2524 NumberedVals.push_back(Fn);
2526 Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
2527 Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
2528 Fn->setCallingConv(CC);
2529 Fn->setAttributes(PAL);
2530 Fn->setAlignment(Alignment);
2531 Fn->setSection(Section);
2532 if (!GC.empty()) Fn->setGC(GC.c_str());
2534 // Add all of the arguments we parsed to the function.
2535 Function::arg_iterator ArgIt = Fn->arg_begin();
2536 for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
2537 // If the argument has a name, insert it into the argument symbol table.
2538 if (ArgList[i].Name.empty()) continue;
2540 // Set the name, if it conflicted, it will be auto-renamed.
2541 ArgIt->setName(ArgList[i].Name);
2543 if (ArgIt->getNameStr() != ArgList[i].Name)
2544 return Error(ArgList[i].Loc, "redefinition of argument '%" +
2545 ArgList[i].Name + "'");
2552 /// ParseFunctionBody
2553 /// ::= '{' BasicBlock+ '}'
2554 /// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
2556 bool LLParser::ParseFunctionBody(Function &Fn) {
2557 if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
2558 return TokError("expected '{' in function body");
2559 Lex.Lex(); // eat the {.
2561 PerFunctionState PFS(*this, Fn);
2563 while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
2564 if (ParseBasicBlock(PFS)) return true;
2569 // Verify function is ok.
2570 return PFS.VerifyFunctionComplete();
2574 /// ::= LabelStr? Instruction*
2575 bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
2576 // If this basic block starts out with a name, remember it.
2578 LocTy NameLoc = Lex.getLoc();
2579 if (Lex.getKind() == lltok::LabelStr) {
2580 Name = Lex.getStrVal();
2584 BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
2585 if (BB == 0) return true;
2587 std::string NameStr;
2589 // Parse the instructions in this block until we get a terminator.
2592 // This instruction may have three possibilities for a name: a) none
2593 // specified, b) name specified "%foo =", c) number specified: "%4 =".
2594 LocTy NameLoc = Lex.getLoc();
2598 if (Lex.getKind() == lltok::LocalVarID) {
2599 NameID = Lex.getUIntVal();
2601 if (ParseToken(lltok::equal, "expected '=' after instruction id"))
2603 } else if (Lex.getKind() == lltok::LocalVar ||
2604 // FIXME: REMOVE IN LLVM 3.0
2605 Lex.getKind() == lltok::StringConstant) {
2606 NameStr = Lex.getStrVal();
2608 if (ParseToken(lltok::equal, "expected '=' after instruction name"))
2612 if (ParseInstruction(Inst, BB, PFS)) return true;
2614 BB->getInstList().push_back(Inst);
2616 // Set the name on the instruction.
2617 if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
2618 } while (!isa<TerminatorInst>(Inst));
2623 //===----------------------------------------------------------------------===//
2624 // Instruction Parsing.
2625 //===----------------------------------------------------------------------===//
2627 /// ParseInstruction - Parse one of the many different instructions.
2629 bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
2630 PerFunctionState &PFS) {
2631 lltok::Kind Token = Lex.getKind();
2632 if (Token == lltok::Eof)
2633 return TokError("found end of file when expecting more instructions");
2634 LocTy Loc = Lex.getLoc();
2635 unsigned KeywordVal = Lex.getUIntVal();
2636 Lex.Lex(); // Eat the keyword.
2639 default: return Error(Loc, "expected instruction opcode");
2640 // Terminator Instructions.
2641 case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
2642 case lltok::kw_unreachable: Inst = new UnreachableInst(Context); return false;
2643 case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
2644 case lltok::kw_br: return ParseBr(Inst, PFS);
2645 case lltok::kw_switch: return ParseSwitch(Inst, PFS);
2646 case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
2647 // Binary Operators.
2650 case lltok::kw_mul: {
2653 LocTy ModifierLoc = Lex.getLoc();
2654 if (EatIfPresent(lltok::kw_nuw))
2656 if (EatIfPresent(lltok::kw_nsw)) {
2658 if (EatIfPresent(lltok::kw_nuw))
2661 // API compatibility: Accept either integer or floating-point types.
2662 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 0);
2664 if (!Inst->getType()->isIntOrIntVector()) {
2666 return Error(ModifierLoc, "nuw only applies to integer operations");
2668 return Error(ModifierLoc, "nsw only applies to integer operations");
2671 cast<OverflowingBinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
2673 cast<OverflowingBinaryOperator>(Inst)->setHasNoSignedWrap(true);
2677 case lltok::kw_fadd:
2678 case lltok::kw_fsub:
2679 case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2681 case lltok::kw_sdiv: {
2683 if (EatIfPresent(lltok::kw_exact))
2685 bool Result = ParseArithmetic(Inst, PFS, KeywordVal, 1);
2688 cast<SDivOperator>(Inst)->setIsExact(true);
2692 case lltok::kw_udiv:
2693 case lltok::kw_urem:
2694 case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
2695 case lltok::kw_fdiv:
2696 case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
2698 case lltok::kw_lshr:
2699 case lltok::kw_ashr:
2702 case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
2703 case lltok::kw_icmp:
2704 case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
2706 case lltok::kw_trunc:
2707 case lltok::kw_zext:
2708 case lltok::kw_sext:
2709 case lltok::kw_fptrunc:
2710 case lltok::kw_fpext:
2711 case lltok::kw_bitcast:
2712 case lltok::kw_uitofp:
2713 case lltok::kw_sitofp:
2714 case lltok::kw_fptoui:
2715 case lltok::kw_fptosi:
2716 case lltok::kw_inttoptr:
2717 case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, KeywordVal);
2719 case lltok::kw_select: return ParseSelect(Inst, PFS);
2720 case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
2721 case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
2722 case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
2723 case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
2724 case lltok::kw_phi: return ParsePHI(Inst, PFS);
2725 case lltok::kw_call: return ParseCall(Inst, PFS, false);
2726 case lltok::kw_tail: return ParseCall(Inst, PFS, true);
2728 case lltok::kw_alloca:
2729 case lltok::kw_malloc: return ParseAlloc(Inst, PFS, KeywordVal);
2730 case lltok::kw_free: return ParseFree(Inst, PFS);
2731 case lltok::kw_load: return ParseLoad(Inst, PFS, false);
2732 case lltok::kw_store: return ParseStore(Inst, PFS, false);
2733 case lltok::kw_volatile:
2734 if (EatIfPresent(lltok::kw_load))
2735 return ParseLoad(Inst, PFS, true);
2736 else if (EatIfPresent(lltok::kw_store))
2737 return ParseStore(Inst, PFS, true);
2739 return TokError("expected 'load' or 'store'");
2740 case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
2741 case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
2742 case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
2743 case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
2747 /// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
2748 bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
2749 if (Opc == Instruction::FCmp) {
2750 switch (Lex.getKind()) {
2751 default: TokError("expected fcmp predicate (e.g. 'oeq')");
2752 case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
2753 case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
2754 case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
2755 case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
2756 case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
2757 case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
2758 case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
2759 case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
2760 case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
2761 case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
2762 case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
2763 case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
2764 case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
2765 case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
2766 case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
2767 case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
2770 switch (Lex.getKind()) {
2771 default: TokError("expected icmp predicate (e.g. 'eq')");
2772 case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
2773 case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
2774 case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
2775 case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
2776 case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
2777 case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
2778 case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
2779 case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
2780 case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
2781 case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
2788 //===----------------------------------------------------------------------===//
2789 // Terminator Instructions.
2790 //===----------------------------------------------------------------------===//
2792 /// ParseRet - Parse a return instruction.
2794 /// ::= 'ret' TypeAndValue
2795 /// ::= 'ret' TypeAndValue (',' TypeAndValue)+ [[obsolete: LLVM 3.0]]
2796 bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
2797 PerFunctionState &PFS) {
2798 PATypeHolder Ty(Type::getVoidTy(Context));
2799 if (ParseType(Ty, true /*void allowed*/)) return true;
2801 if (Ty == Type::getVoidTy(Context)) {
2802 Inst = ReturnInst::Create(Context);
2807 if (ParseValue(Ty, RV, PFS)) return true;
2809 // The normal case is one return value.
2810 if (Lex.getKind() == lltok::comma) {
2811 // FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
2812 // of 'ret {i32,i32} {i32 1, i32 2}'
2813 SmallVector<Value*, 8> RVs;
2816 while (EatIfPresent(lltok::comma)) {
2817 if (ParseTypeAndValue(RV, PFS)) return true;
2821 RV = UndefValue::get(PFS.getFunction().getReturnType());
2822 for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
2823 Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
2824 BB->getInstList().push_back(I);
2828 Inst = ReturnInst::Create(Context, RV);
2834 /// ::= 'br' TypeAndValue
2835 /// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
2836 bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
2838 Value *Op0, *Op1, *Op2;
2839 if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
2841 if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
2842 Inst = BranchInst::Create(BB);
2846 if (Op0->getType() != Type::getInt1Ty(Context))
2847 return Error(Loc, "branch condition must have 'i1' type");
2849 if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
2850 ParseTypeAndValue(Op1, Loc, PFS) ||
2851 ParseToken(lltok::comma, "expected ',' after true destination") ||
2852 ParseTypeAndValue(Op2, Loc2, PFS))
2855 if (!isa<BasicBlock>(Op1))
2856 return Error(Loc, "true destination of branch must be a basic block");
2857 if (!isa<BasicBlock>(Op2))
2858 return Error(Loc2, "true destination of branch must be a basic block");
2860 Inst = BranchInst::Create(cast<BasicBlock>(Op1), cast<BasicBlock>(Op2), Op0);
2866 /// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
2868 /// ::= (TypeAndValue ',' TypeAndValue)*
2869 bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
2870 LocTy CondLoc, BBLoc;
2871 Value *Cond, *DefaultBB;
2872 if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
2873 ParseToken(lltok::comma, "expected ',' after switch condition") ||
2874 ParseTypeAndValue(DefaultBB, BBLoc, PFS) ||
2875 ParseToken(lltok::lsquare, "expected '[' with switch table"))
2878 if (!isa<IntegerType>(Cond->getType()))
2879 return Error(CondLoc, "switch condition must have integer type");
2880 if (!isa<BasicBlock>(DefaultBB))
2881 return Error(BBLoc, "default destination must be a basic block");
2883 // Parse the jump table pairs.
2884 SmallPtrSet<Value*, 32> SeenCases;
2885 SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
2886 while (Lex.getKind() != lltok::rsquare) {
2887 Value *Constant, *DestBB;
2889 if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
2890 ParseToken(lltok::comma, "expected ',' after case value") ||
2891 ParseTypeAndValue(DestBB, BBLoc, PFS))
2894 if (!SeenCases.insert(Constant))
2895 return Error(CondLoc, "duplicate case value in switch");
2896 if (!isa<ConstantInt>(Constant))
2897 return Error(CondLoc, "case value is not a constant integer");
2898 if (!isa<BasicBlock>(DestBB))
2899 return Error(BBLoc, "case destination is not a basic block");
2901 Table.push_back(std::make_pair(cast<ConstantInt>(Constant),
2902 cast<BasicBlock>(DestBB)));
2905 Lex.Lex(); // Eat the ']'.
2907 SwitchInst *SI = SwitchInst::Create(Cond, cast<BasicBlock>(DefaultBB),
2909 for (unsigned i = 0, e = Table.size(); i != e; ++i)
2910 SI->addCase(Table[i].first, Table[i].second);
2916 /// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
2917 /// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
2918 bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
2919 LocTy CallLoc = Lex.getLoc();
2920 unsigned CC, RetAttrs, FnAttrs;
2921 PATypeHolder RetType(Type::getVoidTy(Context));
2924 SmallVector<ParamInfo, 16> ArgList;
2926 Value *NormalBB, *UnwindBB;
2927 if (ParseOptionalCallingConv(CC) ||
2928 ParseOptionalAttrs(RetAttrs, 1) ||
2929 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
2930 ParseValID(CalleeID) ||
2931 ParseParameterList(ArgList, PFS) ||
2932 ParseOptionalAttrs(FnAttrs, 2) ||
2933 ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
2934 ParseTypeAndValue(NormalBB, PFS) ||
2935 ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
2936 ParseTypeAndValue(UnwindBB, PFS))
2939 if (!isa<BasicBlock>(NormalBB))
2940 return Error(CallLoc, "normal destination is not a basic block");
2941 if (!isa<BasicBlock>(UnwindBB))
2942 return Error(CallLoc, "unwind destination is not a basic block");
2944 // If RetType is a non-function pointer type, then this is the short syntax
2945 // for the call, which means that RetType is just the return type. Infer the
2946 // rest of the function argument types from the arguments that are present.
2947 const PointerType *PFTy = 0;
2948 const FunctionType *Ty = 0;
2949 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
2950 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
2951 // Pull out the types of all of the arguments...
2952 std::vector<const Type*> ParamTypes;
2953 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
2954 ParamTypes.push_back(ArgList[i].V->getType());
2956 if (!FunctionType::isValidReturnType(RetType))
2957 return Error(RetTypeLoc, "Invalid result type for LLVM function");
2959 Ty = FunctionType::get(RetType, ParamTypes, false);
2960 PFTy = PointerType::getUnqual(Ty);
2963 // Look up the callee.
2965 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
2967 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
2968 // function attributes.
2969 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
2970 if (FnAttrs & ObsoleteFuncAttrs) {
2971 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
2972 FnAttrs &= ~ObsoleteFuncAttrs;
2975 // Set up the Attributes for the function.
2976 SmallVector<AttributeWithIndex, 8> Attrs;
2977 if (RetAttrs != Attribute::None)
2978 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
2980 SmallVector<Value*, 8> Args;
2982 // Loop through FunctionType's arguments and ensure they are specified
2983 // correctly. Also, gather any parameter attributes.
2984 FunctionType::param_iterator I = Ty->param_begin();
2985 FunctionType::param_iterator E = Ty->param_end();
2986 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
2987 const Type *ExpectedTy = 0;
2990 } else if (!Ty->isVarArg()) {
2991 return Error(ArgList[i].Loc, "too many arguments specified");
2994 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
2995 return Error(ArgList[i].Loc, "argument is not of expected type '" +
2996 ExpectedTy->getDescription() + "'");
2997 Args.push_back(ArgList[i].V);
2998 if (ArgList[i].Attrs != Attribute::None)
2999 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3003 return Error(CallLoc, "not enough parameters specified for call");
3005 if (FnAttrs != Attribute::None)
3006 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3008 // Finish off the Attributes and check them
3009 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3011 InvokeInst *II = InvokeInst::Create(Callee, cast<BasicBlock>(NormalBB),
3012 cast<BasicBlock>(UnwindBB),
3013 Args.begin(), Args.end());
3014 II->setCallingConv(CC);
3015 II->setAttributes(PAL);
3022 //===----------------------------------------------------------------------===//
3023 // Binary Operators.
3024 //===----------------------------------------------------------------------===//
3027 /// ::= ArithmeticOps TypeAndValue ',' Value
3029 /// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
3030 /// then any integer operand is allowed, if it is 2, any fp operand is allowed.
3031 bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
3032 unsigned Opc, unsigned OperandType) {
3033 LocTy Loc; Value *LHS, *RHS;
3034 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3035 ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
3036 ParseValue(LHS->getType(), RHS, PFS))
3040 switch (OperandType) {
3041 default: llvm_unreachable("Unknown operand type!");
3042 case 0: // int or FP.
3043 Valid = LHS->getType()->isIntOrIntVector() ||
3044 LHS->getType()->isFPOrFPVector();
3046 case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
3047 case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
3051 return Error(Loc, "invalid operand type for instruction");
3053 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3058 /// ::= ArithmeticOps TypeAndValue ',' Value {
3059 bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
3061 LocTy Loc; Value *LHS, *RHS;
3062 if (ParseTypeAndValue(LHS, Loc, PFS) ||
3063 ParseToken(lltok::comma, "expected ',' in logical operation") ||
3064 ParseValue(LHS->getType(), RHS, PFS))
3067 if (!LHS->getType()->isIntOrIntVector())
3068 return Error(Loc,"instruction requires integer or integer vector operands");
3070 Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
3076 /// ::= 'icmp' IPredicates TypeAndValue ',' Value
3077 /// ::= 'fcmp' FPredicates TypeAndValue ',' Value
3078 bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
3080 // Parse the integer/fp comparison predicate.
3084 if (ParseCmpPredicate(Pred, Opc) ||
3085 ParseTypeAndValue(LHS, Loc, PFS) ||
3086 ParseToken(lltok::comma, "expected ',' after compare value") ||
3087 ParseValue(LHS->getType(), RHS, PFS))
3090 if (Opc == Instruction::FCmp) {
3091 if (!LHS->getType()->isFPOrFPVector())
3092 return Error(Loc, "fcmp requires floating point operands");
3093 Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3095 assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
3096 if (!LHS->getType()->isIntOrIntVector() &&
3097 !isa<PointerType>(LHS->getType()))
3098 return Error(Loc, "icmp requires integer operands");
3099 Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
3104 //===----------------------------------------------------------------------===//
3105 // Other Instructions.
3106 //===----------------------------------------------------------------------===//
3110 /// ::= CastOpc TypeAndValue 'to' Type
3111 bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
3113 LocTy Loc; Value *Op;
3114 PATypeHolder DestTy(Type::getVoidTy(Context));
3115 if (ParseTypeAndValue(Op, Loc, PFS) ||
3116 ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
3120 if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy)) {
3121 CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
3122 return Error(Loc, "invalid cast opcode for cast from '" +
3123 Op->getType()->getDescription() + "' to '" +
3124 DestTy->getDescription() + "'");
3126 Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
3131 /// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3132 bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
3134 Value *Op0, *Op1, *Op2;
3135 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3136 ParseToken(lltok::comma, "expected ',' after select condition") ||
3137 ParseTypeAndValue(Op1, PFS) ||
3138 ParseToken(lltok::comma, "expected ',' after select value") ||
3139 ParseTypeAndValue(Op2, PFS))
3142 if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
3143 return Error(Loc, Reason);
3145 Inst = SelectInst::Create(Op0, Op1, Op2);
3150 /// ::= 'va_arg' TypeAndValue ',' Type
3151 bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
3153 PATypeHolder EltTy(Type::getVoidTy(Context));
3155 if (ParseTypeAndValue(Op, PFS) ||
3156 ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
3157 ParseType(EltTy, TypeLoc))
3160 if (!EltTy->isFirstClassType())
3161 return Error(TypeLoc, "va_arg requires operand with first class type");
3163 Inst = new VAArgInst(Op, EltTy);
3167 /// ParseExtractElement
3168 /// ::= 'extractelement' TypeAndValue ',' TypeAndValue
3169 bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
3172 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3173 ParseToken(lltok::comma, "expected ',' after extract value") ||
3174 ParseTypeAndValue(Op1, PFS))
3177 if (!ExtractElementInst::isValidOperands(Op0, Op1))
3178 return Error(Loc, "invalid extractelement operands");
3180 Inst = ExtractElementInst::Create(Op0, Op1);
3184 /// ParseInsertElement
3185 /// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3186 bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
3188 Value *Op0, *Op1, *Op2;
3189 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3190 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3191 ParseTypeAndValue(Op1, PFS) ||
3192 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3193 ParseTypeAndValue(Op2, PFS))
3196 if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
3197 return Error(Loc, "invalid insertelement operands");
3199 Inst = InsertElementInst::Create(Op0, Op1, Op2);
3203 /// ParseShuffleVector
3204 /// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
3205 bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
3207 Value *Op0, *Op1, *Op2;
3208 if (ParseTypeAndValue(Op0, Loc, PFS) ||
3209 ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
3210 ParseTypeAndValue(Op1, PFS) ||
3211 ParseToken(lltok::comma, "expected ',' after shuffle value") ||
3212 ParseTypeAndValue(Op2, PFS))
3215 if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
3216 return Error(Loc, "invalid extractelement operands");
3218 Inst = new ShuffleVectorInst(Op0, Op1, Op2);
3223 /// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Valueß ']')*
3224 bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
3225 PATypeHolder Ty(Type::getVoidTy(Context));
3227 LocTy TypeLoc = Lex.getLoc();
3229 if (ParseType(Ty) ||
3230 ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3231 ParseValue(Ty, Op0, PFS) ||
3232 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3233 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3234 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3237 SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
3239 PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
3241 if (!EatIfPresent(lltok::comma))
3244 if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
3245 ParseValue(Ty, Op0, PFS) ||
3246 ParseToken(lltok::comma, "expected ',' after insertelement value") ||
3247 ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
3248 ParseToken(lltok::rsquare, "expected ']' in phi value list"))
3252 if (!Ty->isFirstClassType())
3253 return Error(TypeLoc, "phi node must have first class type");
3255 PHINode *PN = PHINode::Create(Ty);
3256 PN->reserveOperandSpace(PHIVals.size());
3257 for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
3258 PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
3264 /// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
3265 /// ParameterList OptionalAttrs
3266 bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
3268 unsigned CC, RetAttrs, FnAttrs;
3269 PATypeHolder RetType(Type::getVoidTy(Context));
3272 SmallVector<ParamInfo, 16> ArgList;
3273 LocTy CallLoc = Lex.getLoc();
3275 if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
3276 ParseOptionalCallingConv(CC) ||
3277 ParseOptionalAttrs(RetAttrs, 1) ||
3278 ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
3279 ParseValID(CalleeID) ||
3280 ParseParameterList(ArgList, PFS) ||
3281 ParseOptionalAttrs(FnAttrs, 2))
3284 // If RetType is a non-function pointer type, then this is the short syntax
3285 // for the call, which means that RetType is just the return type. Infer the
3286 // rest of the function argument types from the arguments that are present.
3287 const PointerType *PFTy = 0;
3288 const FunctionType *Ty = 0;
3289 if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
3290 !(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
3291 // Pull out the types of all of the arguments...
3292 std::vector<const Type*> ParamTypes;
3293 for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
3294 ParamTypes.push_back(ArgList[i].V->getType());
3296 if (!FunctionType::isValidReturnType(RetType))
3297 return Error(RetTypeLoc, "Invalid result type for LLVM function");
3299 Ty = FunctionType::get(RetType, ParamTypes, false);
3300 PFTy = PointerType::getUnqual(Ty);
3303 // Look up the callee.
3305 if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
3307 // FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
3308 // function attributes.
3309 unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
3310 if (FnAttrs & ObsoleteFuncAttrs) {
3311 RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
3312 FnAttrs &= ~ObsoleteFuncAttrs;
3315 // Set up the Attributes for the function.
3316 SmallVector<AttributeWithIndex, 8> Attrs;
3317 if (RetAttrs != Attribute::None)
3318 Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
3320 SmallVector<Value*, 8> Args;
3322 // Loop through FunctionType's arguments and ensure they are specified
3323 // correctly. Also, gather any parameter attributes.
3324 FunctionType::param_iterator I = Ty->param_begin();
3325 FunctionType::param_iterator E = Ty->param_end();
3326 for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
3327 const Type *ExpectedTy = 0;
3330 } else if (!Ty->isVarArg()) {
3331 return Error(ArgList[i].Loc, "too many arguments specified");
3334 if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
3335 return Error(ArgList[i].Loc, "argument is not of expected type '" +
3336 ExpectedTy->getDescription() + "'");
3337 Args.push_back(ArgList[i].V);
3338 if (ArgList[i].Attrs != Attribute::None)
3339 Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
3343 return Error(CallLoc, "not enough parameters specified for call");
3345 if (FnAttrs != Attribute::None)
3346 Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
3348 // Finish off the Attributes and check them
3349 AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
3351 CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
3352 CI->setTailCall(isTail);
3353 CI->setCallingConv(CC);
3354 CI->setAttributes(PAL);
3359 //===----------------------------------------------------------------------===//
3360 // Memory Instructions.
3361 //===----------------------------------------------------------------------===//
3364 /// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3365 /// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalAlignment)?
3366 bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
3368 PATypeHolder Ty(Type::getVoidTy(Context));
3371 unsigned Alignment = 0;
3372 if (ParseType(Ty)) return true;
3374 if (EatIfPresent(lltok::comma)) {
3375 if (Lex.getKind() == lltok::kw_align) {
3376 if (ParseOptionalAlignment(Alignment)) return true;
3377 } else if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
3378 ParseOptionalCommaAlignment(Alignment)) {
3383 if (Size && Size->getType() != Type::getInt32Ty(Context))
3384 return Error(SizeLoc, "element count must be i32");
3386 if (Opc == Instruction::Malloc)
3387 Inst = new MallocInst(Ty, Size, Alignment);
3389 Inst = new AllocaInst(Ty, Size, Alignment);
3394 /// ::= 'free' TypeAndValue
3395 bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS) {
3396 Value *Val; LocTy Loc;
3397 if (ParseTypeAndValue(Val, Loc, PFS)) return true;
3398 if (!isa<PointerType>(Val->getType()))
3399 return Error(Loc, "operand to free must be a pointer");
3400 Inst = new FreeInst(Val);
3405 /// ::= 'volatile'? 'load' TypeAndValue (',' 'align' i32)?
3406 bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
3408 Value *Val; LocTy Loc;
3410 if (ParseTypeAndValue(Val, Loc, PFS) ||
3411 ParseOptionalCommaAlignment(Alignment))
3414 if (!isa<PointerType>(Val->getType()) ||
3415 !cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
3416 return Error(Loc, "load operand must be a pointer to a first class type");
3418 Inst = new LoadInst(Val, "", isVolatile, Alignment);
3423 /// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
3424 bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
3426 Value *Val, *Ptr; LocTy Loc, PtrLoc;
3428 if (ParseTypeAndValue(Val, Loc, PFS) ||
3429 ParseToken(lltok::comma, "expected ',' after store operand") ||
3430 ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
3431 ParseOptionalCommaAlignment(Alignment))
3434 if (!isa<PointerType>(Ptr->getType()))
3435 return Error(PtrLoc, "store operand must be a pointer");
3436 if (!Val->getType()->isFirstClassType())
3437 return Error(Loc, "store operand must be a first class value");
3438 if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
3439 return Error(Loc, "stored value and pointer type do not match");
3441 Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
3446 /// ::= 'getresult' TypeAndValue ',' i32
3447 /// FIXME: Remove support for getresult in LLVM 3.0
3448 bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
3449 Value *Val; LocTy ValLoc, EltLoc;
3451 if (ParseTypeAndValue(Val, ValLoc, PFS) ||
3452 ParseToken(lltok::comma, "expected ',' after getresult operand") ||
3453 ParseUInt32(Element, EltLoc))
3456 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3457 return Error(ValLoc, "getresult inst requires an aggregate operand");
3458 if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
3459 return Error(EltLoc, "invalid getresult index for value");
3460 Inst = ExtractValueInst::Create(Val, Element);
3464 /// ParseGetElementPtr
3465 /// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
3466 bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
3467 Value *Ptr, *Val; LocTy Loc, EltLoc;
3469 bool InBounds = EatIfPresent(lltok::kw_inbounds);
3471 if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
3473 if (!isa<PointerType>(Ptr->getType()))
3474 return Error(Loc, "base of getelementptr must be a pointer");
3476 SmallVector<Value*, 16> Indices;
3477 while (EatIfPresent(lltok::comma)) {
3478 if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
3479 if (!isa<IntegerType>(Val->getType()))
3480 return Error(EltLoc, "getelementptr index must be an integer");
3481 Indices.push_back(Val);
3484 if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
3485 Indices.begin(), Indices.end()))
3486 return Error(Loc, "invalid getelementptr indices");
3487 Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
3489 cast<GEPOperator>(Inst)->setIsInBounds(true);
3493 /// ParseExtractValue
3494 /// ::= 'extractvalue' TypeAndValue (',' uint32)+
3495 bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
3496 Value *Val; LocTy Loc;
3497 SmallVector<unsigned, 4> Indices;
3498 if (ParseTypeAndValue(Val, Loc, PFS) ||
3499 ParseIndexList(Indices))
3502 if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
3503 return Error(Loc, "extractvalue operand must be array or struct");
3505 if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
3507 return Error(Loc, "invalid indices for extractvalue");
3508 Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
3512 /// ParseInsertValue
3513 /// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
3514 bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
3515 Value *Val0, *Val1; LocTy Loc0, Loc1;
3516 SmallVector<unsigned, 4> Indices;
3517 if (ParseTypeAndValue(Val0, Loc0, PFS) ||
3518 ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
3519 ParseTypeAndValue(Val1, Loc1, PFS) ||
3520 ParseIndexList(Indices))
3523 if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
3524 return Error(Loc0, "extractvalue operand must be array or struct");
3526 if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
3528 return Error(Loc0, "invalid indices for insertvalue");
3529 Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
3533 //===----------------------------------------------------------------------===//
3534 // Embedded metadata.
3535 //===----------------------------------------------------------------------===//
3537 /// ParseMDNodeVector
3538 /// ::= Element (',' Element)*
3540 /// ::= 'null' | TypeAndValue
3541 bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts) {
3542 assert(Lex.getKind() == lltok::lbrace);
3546 if (Lex.getKind() == lltok::kw_null) {
3550 PATypeHolder Ty(Type::getVoidTy(Context));
3551 if (ParseType(Ty)) return true;
3552 if (Lex.getKind() == lltok::Metadata) {
3554 MetadataBase *Node = 0;
3555 if (!ParseMDNode(Node))
3558 MetadataBase *MDS = 0;
3559 if (ParseMDString(MDS)) return true;
3564 if (ParseGlobalValue(Ty, C)) return true;
3569 } while (EatIfPresent(lltok::comma));